VDB
CVE-2026-25791
CVE-2026-25791
PUBLISHED
CVSS 7.5 HIGH
Sliver is a command and control framework that uses a custom Wireguard netstack. Prior to 1.7.0, the DNS C2 listener accepts unauthenticated TOTP bootstrap messages and allocates server-side DNS sessions without validating OTP values, even when EnforceOTP is enabled. Because sessions are stored without a cleanup/expiry path in this flow, an unauthenticated remote actor can repeatedly create sessions and drive memory exhaustion. This vulnerability is fixed in 1.7.0.
EPSS 0.45% · 39.3th percentile
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.45%
39.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| github.com | bishopfox/sliver | 0 |
| bishopfox | sliver | 0 |
| BishopFox | sliver | < 1.7.0 |
Timeline
- Feb 6, 2026 CVE Published
- Feb 9, 2026 PoC Published
- Feb 9, 2026 PoC Published
- Feb 10, 2026 EPSS Score
- Feb 10, 2026 CVE Updated
- Feb 12, 2026 Security Advisory
- Feb 13, 2026 EPSS Score
- Feb 16, 2026 EPSS Score
- Feb 19, 2026 EPSS Score
- Feb 22, 2026 EPSS Score
- Feb 24, 2026 EPSS Score
- Feb 27, 2026 EPSS Score
References
- https://github.com/BishopFox/sliver/releases/tag/v1.7.0 fix
- https://github.com/BishopFox/sliver/security/advisories/GHSA-wxrw-gvg8-fqjp url
- https://github.com/BishopFox/sliver package
- https://github.com/BishopFox/sliver/commit/2b65089b27c553e79e69f1067cad1339e4f3d937 fix
- https://nvd.nist.gov/vuln/detail/CVE-2026-25791 advisory