CVE-2025-62689

libmicrohttpd: GNU libmicrohttpd null pointer dereference

Published Nov 10, 2025 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
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'}

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

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
jpcert
Published
Updated
Nov 14, 2025, 6:01 PM
Reserved
Nov 3, 2025, 11:35 PM
Status
Analyzed
Published
Nov 10, 2025, 5:15 AM
Modified
Oct 8, 2026, 12:45 AM
Severity
Moderate
Public date
Nov 10, 2025, 4:10 AM