CVE-2025-59777

Name: CVE-2025-59777
Creator: NVD / NIST
Published: 2025-11-10T05:15:44.117+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.7/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2025-59777 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. 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. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 4.0

8.7/10

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.37%

29.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Gnu	Libmicrohttpd	< 2025-09-16

References

https://git.gnunet.org/libmicrohttpd.git/commit/?id=ff13abc1c1d7d2b30d69d5c0bd4a237e1801c50bPatch
https://jvn.jp/en/jp/JVN76719218/Third Party Advisory
https://www.gnu.org/software/libmicrohttpd/Product

Timeline

Published: Nov 10, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-59777?

How severe is CVE-2025-59777?

CVE-2025-59777 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2025-59777?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-59777?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST