# CVE-2025-59777

## Summary

- **CVE ID:** CVE-2025-59777
- **Severity:** HIGH
- **CVSS Score:** 8.7 (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)
- **CWE:** CWE-476
- **Published:** Nov 10, 2025
- **Last Modified:** Mar 13, 2026

## 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.

## Affected Products

- GNU Project — GNU libbmicrohttpd (v1.0.2 and earlier (The vulnerability remains in the source code up until commit ff13abc on the master branch of the libmicrohttpd Git repository)
- GNU Project — GNU libbmicrohttpd (after the v1.0.2 tag.))

## References

- [CNA](https://www.gnu.org/software/libmicrohttpd/)
- [CNA](https://git.gnunet.org/libmicrohttpd.git/commit/?id=ff13abc1c1d7d2b30d69d5c0bd4a237e1801c50b)
- [CNA](https://jvn.jp/en/jp/JVN76719218/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.43%
- **EPSS Percentile:** 36.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._