CVE-2025-27093 json
Sliver does not restricted traffic between Wireguard clients.
published 2025-10-28 12 mo ago modified 2026-10-08 32 d ago also EUVD-2025-36543 , GHSA-q8j9-34qf-7vq7 , GO-2025-4079
- cvss
- 6.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
Sliver is a command and control framework that uses a custom Wireguard netstack. In versions 1.5.43 and earlier, and in development version 1.6.0-dev, the netstack does not limit traffic between Wireguard clients. This allows clients to communicate with each other unrestrictedly, potentially enabling leaked or recovered keypairs to be used to attack operators or allowing port forwardings to be accessible from other implants.
Patch / fix
- go github.com/BishopFox/sliver 1.5.44
- go github.com/bishopfox/sliver 1.5.44
- bishopfox sliver 1.5.44
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
- govulncheck-vulndb openSUSE Tumbleweed 0.0.20251105T184115-1.1
opensuse advisories openSUSE-SU-2026:21483-1openSUSE-SU-2025:15710-1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 12 mo ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/BishopFox/sliver/security/advisories/GHSA-q8j9-34qf-7vq7 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L |
| GitHub | 3.1 | 6.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/BishopFox/sliver | <1.5.44 |
1.5.44 |
| go | github.com/bishopfox/sliver | <1.5.44 |
1.5.44 |
Affected products
- BishopFox sliver
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
github.com
/BishopFox/sliver/commit/8e5c5f14506d6d60ebb3362e6b9857ab1e0d76ff
web
-
github.com
/BishopFox/sliver/commit/9122878cbbcae543eb8210f616550382af2065fd
web
-
github.com
/BishopFox/sliver/security/advisories/GHSA-q8j9-34qf-7vq7
exploit, web, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-27093
advisory
-
github.com
/BishopFox/sliver
package
-
pkg.go.dev
/vuln/GO-2025-4079
web
Sources
- CVE List CVE-2025-27093
- GitHub Advisory GHSA-q8j9-34qf-7vq7
- NVD CVE-2025-27093
- OSV GO-2025-4079
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.