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Fencer Intel
critical 9.3

CVE-2025-52936 json

Improper Link Resolution Before File Access vulnerability in yrutschle/sslh

published last yr. modified 3mo ago also EUVD-2025-28479

cvss
9.3
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 9%
public exploits
0
none known

Summary

Improper Link Resolution Before File Access ('Link Following') vulnerability in yrutschle sslh.This issue affects sslh: before 2.2.2.

Patch / fix

  • sslh_project sslh 2.2.2
  • sslh Debian 12 1.20-1+deb12u1
  • sslh Debian 14 2.3.1-1

debian advisories DEBIAN-CVE-2025-52936

  • sslh Ubuntu 22.04 LTS 1.20-1+deb11u1build0.22.04.1
  • sslh Ubuntu 25.10 2.1.4-1ubuntu0.25.10.1
  • sslh Ubuntu 26.04 LTS 2.1.4-1ubuntu0.26.04.1
  • sslh Ubuntu Pro 16.04 LTS 1.17-2ubuntu0.1~esm1
  • sslh Ubuntu Pro 18.04 LTS 1.18-1ubuntu0.1~esm1
  • sslh Ubuntu Pro 24.04 LTS 1.22c-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2025-52936

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2025-52936 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 4.0 9.3 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/S:N/AU:Y/R:U/V:C/RE:M/U:Amber
CNA 4.0 9.3 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:C/RE:M/U:Amber

Affected products

  • yrutschle sslh

Classification

Weakness
  • CWE-59 Improper Link Resolution Before File Access

References

Sources

Fencer Intel 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.