CVE-2026-1094383proxy 0.9.7 - 1.0.1 Uninitialized Stack Memory Disclosure via SOCKS4
Updated under an hour ago ()
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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
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-908
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
3proxy 3proxy 3proxy:3proxy (from the name) | from 0.9.7 through 1.0.1; 206c923d6cd433bd2e7196375442650c328b8bfa not affected | CNA record |
References
- https://github.com/3proxy/3proxy/commit/206c923d6cd433bd2e7196375442650c328b8bfapatch, issue-tracking
- https://www.vulncheck.com/advisories/3proxy-uninitialized-stack-memory-disclosure-via-socks4third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.