The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in the Undertow HTTP server core, which is used in WildFly, JBoss EAP, and other Java     applications. The Undertow library fails to properly validate the Host header in incoming HTTP requests.As     a result, requests containing malformed or malicious Host headers are processed without rejection,     enabling attackers to poison caches, perform internal network scans, or hijack user sessions.
    (CVE-2025-12543)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:0384 advisory.

    Red Hat JBoss Enterprise Application Platform 8 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss  Enterprise Application Platform 8.1.3 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 8.1.2, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 8.1.3 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache     Poisoning and SSRF [eap-8.1.z] (CVE-2025-12543)

    * undertow: OutOfMemory when parsing form data encoding with application/x-www-form-urlencoded [eap-8.1.z]     (CVE-2024-3884)

    * undertow-core: Undertow MadeYouReset HTTP/2 DDoS Vulnerability [eap-8.1.z] (CVE-2025-9784)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:3889 advisory.

    Red Hat JBoss Enterprise Application Platform 8 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss Enterprise Application Platform 8.0.12 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 8.0.11, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 8.0.12 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache     Poisoning and SSRF [eap-8.0.z] (CVE-2025-12543)

    * undertow-core: Undertow MadeYouReset HTTP/2 DDoS Vulnerability (CVE-2025-9784)

    * undertow: OutOfMemory when parsing form data encoding with     application/x-www-form-urlencoded [eap-8.0.z] (CVE-2024-3884)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:0383 advisory.

    Red Hat JBoss Enterprise Application Platform 8 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss  Enterprise Application Platform 8.1.3 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 8.1.2, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 8.1.3 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache     Poisoning and SSRF [eap-8.1.z] (CVE-2025-12543)

    * undertow: OutOfMemory when parsing form data encoding with application/x-www-form-urlencoded [eap-8.1.z]     (CVE-2024-3884)

    * undertow-core: Undertow MadeYouReset HTTP/2 DDoS Vulnerability [eap-8.1.z] (CVE-2025-9784)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:3891 advisory.

    Red Hat JBoss Enterprise Application Platform 8 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss Enterprise Application Platform 8.0.12 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 8.0.11, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 8.0.12 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache     Poisoning and SSRF [eap-8.0.z] (CVE-2025-12543)

    * undertow-core: Undertow MadeYouReset HTTP/2 DDoS Vulnerability (CVE-2025-9784)

    * undertow: OutOfMemory when parsing form data encoding with application/x-www-form-urlencoded [eap-8.0.z]     (CVE-2024-3884)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-8144-1 advisory.

    It was discovered that Undertow incorrectly validated the Host header in incoming HTTP requests. A remote     attacker could possibly use this issue to gain unintended access to user sessions.

Tenable has extracted the preceding description block directly from the Ubuntu 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 Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:76128 advisory.

    Red Hat Single Sign-On 7.6 is a standalone server, based on the Keycloak project, that provides     authentication and standards-based single sign-on capabilities for web and mobile applications.

    This release of Red Hat Single Sign-On 7.6.13 on RHEL 7 serves as a replacement for Red Hat Single Sign-On     7.6.12, and includes bug fixes and enhancements, which are documented in the Release Notes document linked     to in the References.

    Security Fix(es):
    * undertow-core: Undertow MadeYouReset HTTP/2 DDoS Vulnerability (CVE-2025-9784)
    * Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and     SSRF (CVE-2025-12543)
    * Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and     SSRF (CVE-2025-12543)
    * Information disclosure and data deletion via second-order SQL injection (CVE-2026-0603)
    * GOSTCTR implementation unable to process more than 255 blocks correctly (CVE-2025-14813)
    * PKIX draft CompositeVerifier accepts empty signature sequence as valid (CVE-2026-5588)
    * unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion (CVE-2026-3505)
    * High integrity impact due to improper DNS domain name constraint enforcement (CVE-2026-42579)
    * HTTP Request Smuggling due to improper handling of conflicting HTTP/1.0 headers (CVE-2026-42581)
    * HTTP Header Injection via HttpProxyHandler Disabled Validation (CVE-2026-42578)
    * Denial of Service via unbounded memory allocation in HTTP content decompression (CVE-2026-42587)
    * Denial of Service via unbounded memory allocation in HTTP content decompression (CVE-2026-42587)
    * IPv6 subnet rule bypass due to incorrect masking operation (CVE-2026-44249)
    * Denial of Service via malformed HAProxy message (CVE-2026-44893)
    * Denial of Service due to resource leak (CVE-2026-48043)
    * Netty HAProxy PROXY protocol v2 codec: Denial of Service via memory leak from crafted PROXY protocol     headers (CVE-2026-48059)
    * Netty has Insufficient Bailiwick Validation for NS Records (CVE-2026-47691)
    * Improper trust manager handling leads to hostname verification bypass (CVE-2026-50010)
    * Information disclosure and data manipulation due to improper CNAME record validation (CVE-2026-45674)
    * Denial of Service due to eager buffer allocation in TLS handshake (CVE-2026-45416)
    * Arbitrary code execution via PolymorphicTypeValidator bypass (CVE-2026-54512)
    * Denial of Service via deeply nested JSON processing (CVE-2026-50193)
    * Denial of Service via incomplete fix in async JSON parser (CVE-2026-68494)
    * Missing authentication on EAP's IIOP NameService leads to MITM or DoS (CVE-2026-15563)
    * Session fixation in OIDC login flow that can lead to account takeover (CVE-2026-7507)
    * Denial of Service via specially crafted SAML input (CVE-2026-7307)
    * Denial of Service due to excessive SAMLRequest decompression (CVE-2026-2575)
    * Denial of Service via excessive processing of OpenID Connect scope parameters (CVE-2026-4634)
    * Unauthorized access via improper validation of encrypted SAML assertions (CVE-2026-2092)

    For more details about the security issue(s), including the impact, a CVSS score, and other related     information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:4917 advisory.

    Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly     application runtime. This release of Red Hat JBoss Enterprise Application Platform 7.4.24 serves as a     replacement for Red Hat JBoss Enterprise Application Platform 7.4.23, and includes bug fixes and     enhancements. See the Red Hat JBoss Enterprise Application Platform 7.4.24 Release Notes for information     about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * jackson-core: jackson-core Potential StackoverflowError (CVE-2025-52999)

    * undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache     Poisoning and SSRF [eap-7.4.z] (CVE-2025-12543)

    * cxf: CXF JMS Code Execution Vulnerability [eap-7.4.z] (CVE-2025-48913)

    * netty-codec-http2: Netty MadeYouReset HTTP/2 DDoS Vulnerability (CVE-2025-55163)

    * org.eclipse.jgit: XXE vulnerability in Eclipse JGit [eap-7.4.z] (CVE-2025-4949)

    * hibernate-core: Hibernate: Information disclosure and data deletion via second-order SQL injection     [eap-7.4.z] (CVE-2026-0603)

    * com.google.protobuf/protobuf-java: StackOverflow vulnerability in Protocol Buffers (CVE-2024-7254)

    * undertow: OutOfMemory when parsing form data encoding with application/x-www-form-urlencoded [eap-7.4.z]     (CVE-2024-3884)

    * undertow-core: Undertow MadeYouReset HTTP/2 DDoS Vulnerability (CVE-2025-9784)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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
282346	Linux Distros Unpatched Vulnerability : CVE-2025-12543	Nessus	Misc.	2026/1/7	2026/7/25	critical
283521	RHEL 9 : Red Hat JBoss Enterprise Application Platform 8.1.3 (RHSA-2026:0384)	Nessus	Red Hat Local Security Checks	2026/1/13	2026/3/17	critical
301159	RHEL 8 : Red Hat JBoss Enterprise Application Platform 8.0.12 (RHSA-2026:3889)	Nessus	Red Hat Local Security Checks	2026/3/6	2026/3/16	critical
283525	RHEL 8 : Red Hat JBoss Enterprise Application Platform 8.1.3 (RHSA-2026:0383)	Nessus	Red Hat Local Security Checks	2026/1/13	2026/3/17	critical
301160	RHEL 9 : Red Hat JBoss Enterprise Application Platform 8.0.12 (RHSA-2026:3891)	Nessus	Red Hat Local Security Checks	2026/3/6	2026/3/16	critical
304786	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : Undertow vulnerability (USN-8144-1)	Nessus	Ubuntu Local Security Checks	2026/4/3	2026/4/3	critical
363386	RHEL 7 : Red Hat Single Sign-On 7.6.13 security update on RHEL 7 (Important) (RHSA-2026:76128)	Nessus	Red Hat Local Security Checks	2026/10/6	2026/10/21	critical
302899	RHEL 9 : Red Hat JBoss Enterprise Application Platform 7.4.24 (RHSA-2026:4917)	Nessus	Red Hat Local Security Checks	2026/3/18	2026/3/18	high

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