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High 7.1Published Oct 13, 2026
CVE-2026-88964An integer underflow in OpenVPN version 2.7_alpha3 through 2.7.7 on Windows and Android allows remote authenticated servers to cause a denial of service or memory disclosure via crafted domain search…
Updated under an hour ago ()
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It affects OpenVPN. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.47%, higher than 39% of scored CVEs.
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An integer underflow in OpenVPN version 2.7_alpha3 through 2.7.7 on Windows and Android allows remote authenticated servers to cause a denial of service or memory disclosure via crafted domain search options
- CVSS
- 7.1 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-191, CWE-125
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.47% (percentile 39)
- Assigned by
- OpenVPN
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 13, 2026
Affected products
OpenVPN OpenVPN openvpn:openvpn (from the name) | from 2.7_alpha3 through 2.7.7 | CNA record |
References
- https://community.openvpn.net/Security%20Announcements/CVE-2026-88964vendor-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.