Raptor RDF Syntax Library from 2.0.15 through 2.0.16 contains a heap-based buffer overflow vulnerability in raptor_new_term_from_counted_literal() caused by truncating language tag length to an unsigned char. Attackers can supply Turtle, TriG, N-Triples or N-Quads documents with language tags of 256 bytes or longer to corrupt heap memory, crash applications, and possibly execute code.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:98509 advisory.

    Raptor is the RDF Parser Toolkit for Redland that provides a set of standalone RDF parsers, generating     triples from RDF/XML or N-Triples.

    Security Fix(es):

    * raptor2: raptor2: arbitrary code execution via heap-based buffer overflow in language tag handling     (CVE-2025-71436)

    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 this issue but has instead relied only on the application's self-reported version number.

The Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-2026_94519 advisory.

    * raptor2: raptor2: arbitrary code execution via heap-based buffer overflow in language tag handling     (CVE-2025-71436)

Tenable has extracted the preceding description block directly from the CIQ 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 MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-2254:01 advisory.

    * raptor2: raptor2: arbitrary code execution via heap-based buffer overflow in language tag handling     (CVE-2025-71436)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-94519 advisory.

    - CVE-2025-71436 raptor2: raptor2: arbitrary code execution via heap-based buffer overflow in language tag     handling       heap-based buffer overflow in language tag handling

Tenable has extracted the preceding description block directly from the Oracle Linux 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 RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:94519 advisory.

    * raptor2: raptor2: arbitrary code execution via heap-based buffer overflow in language tag handling     (CVE-2025-71436)

Tenable has extracted the preceding description block directly from the RockyLinux 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 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:94519 advisory.

    Raptor is the RDF Parser Toolkit for Redland that provides a set of standalone RDF parsers, generating     triples from RDF/XML or N-Triples.

    Security Fix(es):

    * raptor2: raptor2: arbitrary code execution via heap-based buffer overflow in language tag handling     (CVE-2025-71436)

    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 this issue but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Raptor RDF Syntax Library from 2.0.15 through 2.0.16 contains a heap-based buffer overflow vulnerability
    in raptor_new_term_from_counted_literal() caused by truncating language tag length to an unsigned char.
    Attackers can supply Turtle, TriG, N-Triples or N-Quads documents with language tags of 256 bytes or
    longer to corrupt heap memory, crash applications, and possibly execute code. (CVE-2025-71436)

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

  - Raptor RDF Syntax Library from 2.0.15 through 2.0.16 contains a heap-based buffer overflow vulnerability     in raptor_new_term_from_counted_literal() caused by truncating language tag length to an unsigned char.
    Attackers can supply Turtle, TriG, N-Triples or N-Quads documents with language tags of 256 bytes or     longer to corrupt heap memory, crash applications, and possibly execute code. (CVE-2025-71436)

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

ID	Name	Product	Family	Type	Severity
378803	RHEL 9 : raptor2 (RHSA-2026:98509)	Nessus	Red Hat Local Security Checks	Local	high
376431	Rocky Linux 8 [CIQ] Security Update: raptor2 / raptor2-debuginfo / raptor2-debugsource / raptor2-devel (crlsa-2026_94519)	Nessus	Rocky Linux Local Security Checks	Local	high
376295	MiracleLinux 8 : raptor2-2.0.15-18.el8_10 (AXSA:2026-2254:01)	Nessus	Miracle Linux Local Security Checks	Local	high
376155	Oracle Linux 8 : raptor2 (ELSA-2026-94519)	Nessus	Oracle Linux Local Security Checks	Local	high
375849	RockyLinux 8 : raptor2 (RLSA-2026:94519)	Nessus	Rocky Linux Local Security Checks	Local	high
375552	RHEL 8 : raptor2 (RHSA-2026:94519)	Nessus	Red Hat Local Security Checks	Local	high
477731	Echo: raptor2: security update to 2.0.16-6+e2	Tenable Cloud Security	Echo Local Security Checks	Local	high
477731	Echo: raptor2: security update to 2.0.16-6+e2	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	high
369011	Linux Distros Unpatched Vulnerability : CVE-2025-71436	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2025-71436

high

Tenable Plugins

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