CVE-2025-55763 Memory corruption in n/a
A buffer overflow in the URI parser allows remote attackers to execute arbitrary code or cause denial of service via crafted HTTP requests.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-55763?
CVE-2025-55763 is a high-severity memory corruption vulnerability in n/a, published on 29 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-121
Which versions are affected by CVE-2025-55763?
It affects 1 product.
Linux distribution packages (1)
civetweb openSUSE:Tumbleweed | All versions | 1.6+git1776611085.588860e3-1.1 |
Products include Civetweb Project Civetweb.
How do I fix CVE-2025-55763?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-55763 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55763 exists.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2025-55763, GHSA-2757-2hpv-v482, UBUNTU-CVE-2025-55763, openSUSE-SU-2026:10818-1.