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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Gnu
  • Libmicrohttpd

Configuration 1 [-]

cpe:2.3:a:gnu:libmicrohttpd:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://git.gnunet.org/libmicrohttpd.git/commit/?id=ff13abc1c1d7d2b30d69d5c0bd4a237e1801c50b cve-icon cve-icon cve-icon
https://jvn.jp/en/jp/JVN76719218/ cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-62689 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-62689 cve-icon
https://www.gnu.org/software/libmicrohttpd/ cve-icon cve-icon cve-icon
History

Fri, 14 Nov 2025 18:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:gnu:libmicrohttpd:*:*:*:*:*:*:*:*
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 11 Nov 2025 00:15:00 +0000

Type Values Removed Values Added
Title libmicrohttpd: GNU libmicrohttpd null pointer dereference
Weaknesses CWE-476
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

threat_severity

Moderate

Mon, 10 Nov 2025 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Gnu
Gnu libmicrohttpd
Vendors & Products Gnu
Gnu libmicrohttpd

Mon, 10 Nov 2025 04:30:00 +0000

Type Values Removed Values Added
Description 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.
Weaknesses CWE-122
References
Metrics cvssV3_0

{'score': 7.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published: 2025-11-10T04:10:57.970Z

Updated: 2025-11-14T18:01:56.011Z

Reserved: 2025-11-03T23:35:49.815Z

Link: CVE-2025-62689

cve-icon Vulnrichment

Updated: 2025-11-14T18:01:53.270Z

cve-icon NVD

Status : Analyzed

Published: 2025-11-10T05:15:49.087

Modified: 2025-11-14T18:05:06.277

Link: CVE-2025-62689

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-11-10T04:10:57Z

Links: CVE-2025-62689 - Bugzilla