CVE-2026-13117: An incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to trigger a use-after-free during TLS session promotion, potenti

unknownCVE-2026-13117

An incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to trigger a use-after-free during TLS session promotion, potentially leading to a denial of service or memory leakage

Details

Source: NVD Recent CVEs (US · database · site)
Severity: unknown
Published: 2026-07-30
Last updated: 2026-07-30
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-13117

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-131170.37% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 29% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-13117	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

high[NEW] [high] OpenVPN: Multiple vulnerabilitiescert-bund
unknownUSN-8540-1: OpenVPN vulnerabilitiesubuntu
unknownDSA-6376-1 openvpn - security updatedebian

Recent advisories for An incomplete guard

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

mediumGHSA-6q7j-xr26-3h2c: Scriban: ExpressionDepthLimit guard is non-enforcing — parser-recursion DoS in 6.6.0–7.2.…ghsa · 2026-06-26
mediumGHSA-cmwh-pvxp-8882: DOMPurify: Permanent `ALLOWED_ATTR` pollution via `setConfig()` bypassing the hook clone-…ghsa · 2026-06-18