According to the versions of the expat package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external     parsers (created via XML_ExternalEntityParserCreate).(CVE-2024-28757)

    libexpat through 2.5.0 allows a denial of service (resource consumption) because many full reparsings are     required in the case of a large token for which multiple buffer fills are needed.(CVE-2023-52425)

Tenable has extracted the preceding description block directly from the EulerOS expat security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the expat package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    libexpat through 2.5.0 allows a denial of service (resource consumption) because many full reparsings are     required in the case of a large token for which multiple buffer fills are needed.(CVE-2023-52425)

Tenable has extracted the preceding description block directly from the EulerOS expat security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3893 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3893-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                       Guilhem Moulin     September 19, 2024                            https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : expat     Version        : 2.2.10-2+deb11u6     CVE ID         : CVE-2023-52425 CVE-2024-45490 CVE-2024-45491 CVE-2024-45492     Debian Bug     : 1063238 1080149 1080150 1080152

    Multiple vulnerabilities were found in expat, an XML parsing C library,     which could lead to Denial of Service, memory corruption or arbitrary     code execution.

    CVE-2023-52425

        Snild Dolkow discovered that when parsing a large token that         requires multiple buffer fills to complete, expat has to re-parse         the token from start multiple times, which could lead to Denial of         Service via resource exhaustion.

    CVE-2024-45490

        TaiYou discovered that xmlparse.c does not reject a negative length         for XML_ParseBuffer(), which may cause memory corruption or code         execution.

    CVE-2024-45491

        TaiYou discovered that xmlparse.c has an integer overflow for         `nDefaultAtts` on 32-bit platforms, which may cause denial of         service or code execution.

    CVE-2024-45492

        TaiYou discovered that xmlparse.c has an integer overflow for         `m_groupSize` on 32-bit platforms, which may cause denial of service         or code execution.

    For Debian 11 bullseye, these problems have been fixed in version     2.2.10-2+deb11u6.

    We recommend that you upgrade your expat packages.

    For the detailed security status of expat please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/expat

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of AHV installed on the remote host is prior to 20230302.102005. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AHV-20230302.101026 advisory.

  - A crafted NTFS image can trigger a heap-based buffer overflow, caused by an unsanitized attribute in     ntfs_get_attribute_value, in NTFS-3G < 2021.8.22. (CVE-2021-39263)

  - EDK2's Network Package is susceptible to a buffer overflow vulnerability when processing DNS Servers     option from a DHCPv6 Advertise message. This vulnerability can be exploited by an attacker to gain     unauthorized access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.
    (CVE-2023-45234)

  - Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote     attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the     KeyTrap issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the     protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG     records. (CVE-2023-50387)

  - The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped)     allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC     responses in a random subdomain attack, aka the NSEC3 issue. The RFC 5155 specification implies that an     algorithm must perform thousands of iterations of a hash function in certain situations. (CVE-2023-50868)

  - close_altfile in filename.c in less before 606 omits shell_quote calls for LESSCLOSE. (CVE-2022-48624)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2024-759 advisory.

    libexpat through 2.5.0 allows a denial of service (resource consumption) because many full reparsings are     required in the case of a large token for which multiple buffer fills are needed.

    Considering the tradeoff between the stability of Amazon Linux and the impact of CVE-2023-52425 a fix will     not be provided for firefox and thunderbird in Amazon Linux 2 at this time. (CVE-2023-52425)

    An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for     XML_ParseBuffer. (CVE-2024-45490)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4623-1 advisory.

    - CVE-2025-59375: denial of service (resource consumption) caused by processing malformed small documents     (bsc#1249584).
    - CVE-2026-24515: NULL dereference (CWE-476) due to function XML_ExternalEntityParserCreate() failing to     copy the       encoding handler data passed to XML_SetUnknownEncodingHandler() from the parent to the subparser     (bsc#1257144).
    - CVE-2026-25210: lack of buffer size check can lead to an integer overflow (bsc#1257496).
    - CVE-2026-32776: NULL pointer dereference when processing empty external parameter entities inside an     entity       declaration value (bsc#1259726).
    - CVE-2026-32777: denial of service due to infinite loop in DTD content parsing (bsc#1259711).
    - CVE-2026-32778: NULL pointer dereference in `setContext` on retry after an out-of-memory condition       (bsc#1259729).
    - CVE-2026-41080: crafted XML document can cause a denial of service (bsc#1262263).
    - CVE-2026-45186: denial of service via moderately sized crafted XML input (bsc#1264713).
    - CVE-2026-50219: lack of handler call depth tracking for calls to XML_* functions from within handlers in     cases of a       policy violation (bsc#1267631).
    - CVE-2026-56131: lack of handler call depth tracking for calls to XML_ResumeParser from within       handlers in cases of a policy violation (bsc#1268572).
    - CVE-2026-56132: heap-based buffer overflow in doProlog in xmlparse.c (bsc#1268573).
    - CVE-2026-56403,CVE-2026-56404,CVE-2026-56405,CVE-2026-56406,       CVE-2026-56407,CVE-2026-56408,CVE-2026-56409,CVE-2026-56410,       CVE-2026-56411,CVE-2026-56412: multiple integer overflow vulnerabilities (bsc#1275115).
    - CVE-2026-66046: denial of service vulnerability caused by quadratic algorithmic complexity in the     storeAtts()       function (bsc#1275732).
    - CVE-2026-72522: out-of-bounds read and resultant infinite loop due to low surrogates being treated the     same       as high surrogates during Unicode processing (bsc#1275594).
    - CVE-2026-76641: out-of-bounds read vulnerability that allows attackers to trigger       memory corruption (bsc#1275915).
    - CVE-2026-76956: denial of service via hash flooding attacks (bsc#1275860).
    - CVE-2026-76957: lack of handler call depth tracking with custom encoding callbacks. Thus, a use-       after-free can occur (bsc#1275859).
    - CVE-2026-77214: out-of-bounds read due to insufficient checks in `XML_ParseBuffer()` (bsc#1284334).
    - CVE-2026-93990: fails to validate low surrogates following high surrogates in UTF-16 input     (bsc#1282347).
    - CVE-2026-102633: Denial of Service via integer overflow in expat_realloc (bsc#1283493).

    Update to 2.8.5 (jsc#PED-16154):

     * Bug fixes:
     * Fix an OOM-related memory leak on a failed overflow check
     * Fix memory alignment for architectures with 128bit pointers
     * Mark XML_SetHashSalt deprecated
     * CMake: only add /source-charset:utf-8 when /utf-8 is not present
     * lib: resolve undefined behavior from overshifting a signed int
     * lib: support read-only hash table lookup with non-zero-terminated      keys
     * lib: use a C99 bool for ENTITY.open
     * version info bumped from 13:3:12 to 13:4:12
     * fix support for 2+ GiB documents (regression from 2.8.2)
     * reject empty version in the XML declaration
     * fix printf format for AIX
     * CMake|AIX: enable EXPAT_DEV_URANDOM by default
     * version info bumped from 13:2:12 to 13:3:12
     * Existing API function XML_SetHashSalt is now deprecated
     * because of its limitations, and its use should be
     * considered a vulnerability. Please either use the new API
     * function XML_SetHashSalt16Bytes (with known-high-quality
     * entropy input only!) instead, or leave the derivation of
     * a 16-bytes hash salt from high quality entropy to Expat's
     * internal machinery (by *not* calling either of the two
     * XML_SetHashSalt* functions).
     * xmlwf: Fix a memory leak
     * WASI: Fix format specifiers for 32bit WASI SDK
     * Fix alignment of internal allocations for some non-amd64      architectures (e.g. sparc32); fixes up on the fix to      CVE-2025-59375 (of Expat 2.7.2)
     * Fix a class of false positives where input should have been      rejected with error XML_ERROR_ASYNC_ENTITY; regression from      CVE-2024-8176 (of Expat 2.7.0)
     * Prove and regression-proof absence of integer overflow      from function expat_realloc
     * Remove 'harmless' cast that truncated a size_t to unsigned
     * xmlwf: Resolve use of functions XML_GetErrorLineNumber      and XML_GetErrorColumnNumber
     * CVE-2025-59375 -- Disallow use of disproportional amounts of      dynamic memory from within an Expat parser
     * xmlwf: Fix (internal) help generator
     * xmlwf: Mention supported environment variables in

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4615-1 advisory.

    - CVE-2025-59375: denial of service (resource consumption) caused by processing malformed small documents     (bsc#1249584).
    - CVE-2026-24515: NULL dereference (CWE-476) due to function XML_ExternalEntityParserCreate() failing to     copy the       encoding handler data passed to XML_SetUnknownEncodingHandler() from the parent to the subparser     (bsc#1257144).
    - CVE-2026-25210: lack of buffer size check can lead to an integer overflow (bsc#1257496).
    - CVE-2026-32776: NULL pointer dereference when processing empty external parameter entities inside an     entity       declaration value (bsc#1259726).
    - CVE-2026-32777: denial of service due to infinite loop in DTD content parsing (bsc#1259711).
    - CVE-2026-32778: NULL pointer dereference in `setContext` on retry after an out-of-memory condition       (bsc#1259729).
    - CVE-2026-41080: crafted XML document can cause a denial of service (bsc#1262263).
    - CVE-2026-45186: denial of service via moderately sized crafted XML input (bsc#1264713).
    - CVE-2026-50219: lack of handler call depth tracking for calls to XML_* functions from within handlers in     cases of a       policy violation (bsc#1267631).
    - CVE-2026-56131: lack of handler call depth tracking for calls to XML_ResumeParser from within       handlers in cases of a policy violation (bsc#1268572).
    - CVE-2026-56132: heap-based buffer overflow in doProlog in xmlparse.c (bsc#1268573).
    - CVE-2026-56403,CVE-2026-56404,CVE-2026-56405,CVE-2026-56406,       CVE-2026-56407,CVE-2026-56408,CVE-2026-56409,CVE-2026-56410,       CVE-2026-56411,CVE-2026-56412: multiple integer overflow vulnerabilities (bsc#1275115).
    - CVE-2026-66046: denial of service vulnerability caused by quadratic algorithmic complexity in the     storeAtts()       function (bsc#1275732).
    - CVE-2026-72522: out-of-bounds read and resultant infinite loop due to low surrogates being treated the     same       as high surrogates during Unicode processing (bsc#1275594).
    - CVE-2026-76641: out-of-bounds read vulnerability that allows attackers to trigger       memory corruption (bsc#1275915).
    - CVE-2026-76956: denial of service via hash flooding attacks (bsc#1275860).
    - CVE-2026-76957: lack of handler call depth tracking with custom encoding callbacks. Thus, a use-       after-free can occur (bsc#1275859).
    - CVE-2026-77214: out-of-bounds read due to insufficient checks in `XML_ParseBuffer()` (bsc#1284334).
    - CVE-2026-93990: fails to validate low surrogates following high surrogates in UTF-16 input     (bsc#1282347).
    - CVE-2026-102633: Denial of Service via integer overflow in expat_realloc (bsc#1283493).

    Update to 2.8.5 (jsc#PED-16154):

     * Bug fixes:
     * Fix an OOM-related memory leak on a failed overflow check
     * Fix memory alignment for architectures with 128bit pointers
     * Mark XML_SetHashSalt deprecated
     * CMake: only add /source-charset:utf-8 when /utf-8 is not present
     * lib: resolve undefined behavior from overshifting a signed int
     * lib: support read-only hash table lookup with non-zero-terminated      keys
     * lib: use a C99 bool for ENTITY.open
     * version info bumped from 13:3:12 to 13:4:12
     * fix support for 2+ GiB documents (regression from 2.8.2)
     * reject empty version in the XML declaration
     * fix printf format for AIX
     * CMake|AIX: enable EXPAT_DEV_URANDOM by default
     * version info bumped from 13:2:12 to 13:3:12
     * Existing API function XML_SetHashSalt is now deprecated
     * because of its limitations, and its use should be
     * considered a vulnerability. Please either use the new API
     * function XML_SetHashSalt16Bytes (with known-high-quality
     * entropy input only!) instead, or leave the derivation of
     * a 16-bytes hash salt from high quality entropy to Expat's
     * internal machinery (by *not* calling either of the two
     * XML_SetHashSalt* functions).
     * xmlwf: Fix a memory leak
     * WASI: Fix format specifiers for 32bit WASI SDK
     * Fix alignment of internal allocations for some non-amd64      architectures (e.g. sparc32); fixes up on the fix to      CVE-2025-59375 (of Expat 2.7.2)
     * Fix a class of false positives where input should have been      rejected with error XML_ERROR_ASYNC_ENTITY; regression from      CVE-2024-8176 (of Expat 2.7.0)
     * Prove and regression-proof absence of integer overflow      from function expat_realloc
     * Remove 'harmless' cast that truncated a size_t to unsigned
     * xmlwf: Resolve use of functions XML_GetErrorLineNumber      and XML_GetErrorColumnNumber
     * CVE-2025-59375 -- Disallow use of disproportional amounts of      dynamic memory from within an Expat parser
     * xmlwf: Fix (internal) help generator
     * xmlwf: Mention supported environment variables in

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名前	製品	ファミリー	公開日	更新日	深刻度
205913	EulerOS 2.0 SP12 : expat (EulerOS-SA-2024-2235)	Nessus	Huawei Local Security Checks	2024/8/20	2025/3/10	high
207182	EulerOS 2.0 SP9 : expat (EulerOS-SA-2024-2388)	Nessus	Huawei Local Security Checks	2024/9/12	2024/9/12	high
207413	Debian dla-3893 : expat - security update	Nessus	Debian Local Security Checks	2024/9/19	2025/3/21	critical
206824	Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-20230302.101026)	Nessus	Misc.	2024/9/9	2025/10/6	medium
211371	Amazon Linux 2023 : expat, expat-devel, expat-static (ALAS2023-2024-759)	Nessus	Amazon Linux Local Security Checks	2024/11/14	2025/3/21	high
365317	SUSE SLES15 Security Update : expat (SUSE-SU-2026:4623-1)	Nessus	SuSE Local Security Checks	2026/10/13	2026/10/14	high
365325	SUSE SLES12 Security Update : expat (SUSE-SU-2026:4615-1)	Nessus	SuSE Local Security Checks	2026/10/13	2026/10/14	high

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