CVE-2026-109438
CVE-2026-109438 · 3proxy 0.9.7 - 1.0.1 Uninitialized Stack Memory Disclosure via SOCKS4
This page contains facts from public vulnerability sources. Check the original advisory before updating.
3proxy from 0.9.7 through 1.0.1, fixed in commit 206c923, contains an uninitialized stack memory disclosure vulnerability that allows unauthenticated attackers to leak stack bytes via the SOCKS4 reply path when the external-NAT option (-Ne) is configured. Attackers can send a client probe that fails the SOCKS version check to trigger a reply containing uninitialized bytes from the sin structure, exposing high bytes of a userspace pointer that weakens ASLR protections.
CVSS 6.3 · Medium · EPSS 0.4%
- Published
- Updated
Affected products and versions
3proxy
- Versions
- ≥ 0.9.7, ≤ 1.0.1: Affected (semver)
- 206c923d6cd433bd2e7196375442650c328b8bfa: Not affected (git)
No fix published