CVE-2025-55763 Affecting civetweb package, versions <1.16+dfsg-3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU2604-CIVETWEB-16232528
- published7 Sept 2026
- disclosed29 Aug 2025
Introduced: 29 Aug 2025
CVE-2025-55763 (opens in a new tab)How to fix?
Upgrade Ubuntu:26.04 civetweb to version 1.16+dfsg-3 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream civetweb package and not the civetweb package as distributed by Ubuntu.
See How to fix? for Ubuntu:26.04 relevant fixed versions and status.
Buffer Overflow in the URI parser of CivetWeb 1.14 through 1.16 (latest) allows a remote attacker to achieve remote code execution via a crafted HTTP request. This vulnerability is triggered during request processing and may allow an attacker to corrupt heap memory, potentially leading to denial of service or arbitrary code execution.