NULL pointer dereference vulnerability exists in GNU libmicrohttpd v1.0.2 and earlier. The vulnerability was fixed in commit ff13abc on the master branch of the libmicrohttpd Git repository, after the v1.0.2 tag. A specially crafted packet sent by an attacker could cause a denial-of-service (DoS) condition.

An update of the libmicrohttpd package has been released.

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-17060a5ba0 advisory.

    Update to 1.0.5-1

    ----

    Update to 1.0.4-1


    ----

    Update to 1.0.3-1

Tenable has extracted the preceding description block directly from the Fedora 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 Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-7a0641ca41 advisory.

    Update to 1.0.3-1

Tenable has extracted the preceding description block directly from the Fedora 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 Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-65a08d1312 advisory.

    Update to 1.0.3-1

Tenable has extracted the preceding description block directly from the Fedora 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 SLES16 / SLES_SAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:20029-1 advisory.

    - CVE-2025-62689: Fixed heap-based buffer overflow through       a specially crafted packet (bsc#1253178)
    - CVE-2025-59777: Fixed NULL pointer dereference through       a specially crafted packet (bsc#1253177)

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 openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20016-1 advisory.

    - CVE-2025-62689: Fixed heap-based buffer overflow through       a specially crafted packet (bsc#1253178)
    - CVE-2025-59777: Fixed NULL pointer dereference through       a specially crafted packet (bsc#1253177)

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 SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:4291-1 advisory.

    - CVE-2025-59777: Fixed NULL pointer dereference via specially crafted packet sent by an attacker     (bsc#1253177)
      - CVE-2025-62689: Fixed heap-based buffer overflow via specially crafted packet sent by an attacker     (bsc#1253178)

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

  - NULL pointer dereference vulnerability exists in GNU libmicrohttpd v1.0.2 and earlier. The vulnerability     was fixed in commit ff13abc on the master branch of the libmicrohttpd Git repository, after the v1.0.2     tag. A specially crafted packet sent by an attacker could cause a denial-of-service (DoS) condition.
    (CVE-2025-59777)

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

ID	Name	Product	Family	Severity
330419	Photon OS 5.0: Libmicrohttpd PHSA-2026-5.0-0929	Nessus	PhotonOS Local Security Checks	high
310245	Fedora 44 : libmicrohttpd (2026-17060a5ba0)	Nessus	Fedora Local Security Checks	high
306055	Fedora 42 : libmicrohttpd (2026-7a0641ca41)	Nessus	Fedora Local Security Checks	high
306045	Fedora 43 : libmicrohttpd (2026-65a08d1312)	Nessus	Fedora Local Security Checks	high
288031	SUSE SLES16 Security Update : libmicrohttpd (SUSE-SU-2026:20029-1)	Nessus	SuSE Local Security Checks	high
284813	openSUSE 16 Security Update : libmicrohttpd (openSUSE-SU-2026:20016-1)	Nessus	SuSE Local Security Checks	high
277255	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : libmicrohttpd (SUSE-SU-2025:4291-1)	Nessus	SuSE Local Security Checks	high
274576	Linux Distros Unpatched Vulnerability : CVE-2025-59777	Nessus	Misc.	high

Detections

Analytics

CVE-2025-59777

high

Tenable Plugins

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high

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high