CVE-2025-27090

medium

Description

Sliver is an open source cross-platform adversary emulation/red team framework, it can be used by organizations of all sizes to perform security testing. The reverse port forwarding in sliver teamserver allows the implant to open a reverse tunnel on the sliver teamserver without verifying if the operator instructed the implant to do so. The only impact that has been shown is the exposure of the server's IP address to a third party. This issue has been addressed in version 1.5.43 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

References

https://github.com/BishopFox/sliver/security/advisories/GHSA-fh4v-v779-4g2w

https://github.com/BishopFox/sliver/commit/10e245326070c6a5884a02e0790bb7e2baefb3a1

https://github.com/BishopFox/sliver/commit/0f340a25cf3d496ed870dae7da39eab4427bc16f

Details

Source: Mitre, NVD

Published: 2025-02-19

Updated: 2025-02-27

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Severity: Medium

CVSS v4

Base Score: 6.9

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00064