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CVE-2025-53391VulnerabilityPublished Updated

The Debian zuluPolkit/CMakeLists.txt file for zuluCrypt through the zulucrypt_6.2.0-1 package has insecure PolicyKit…

Affects zulucryptSource GCVE Database

0
Authoritative record:CVE-2025-53391· Critical 9.3

Not known to be exploited · CVSS 9.3 Critical · fixed in 5.4.0-2ubuntu0.1~esm2 : patch zulucrypt as a priority.

Data as of 27 Oct 2026, 00:07 UTC

CVSS 3.1 base score
9.3Critical
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 5.4.0-2ubuntu0.1~esm2, 5.7.0-1ubuntu0.1~esm1, 5.7.1-2ubuntu0.1~esm1 +1
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Jun 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Ubuntu 25.10zulucryptpkg:deb/ubuntu/zulucrypt?arch=source&distro=questingOther threatsAffected
  • =6.2.0-1ubuntu3
Fixed in–
Ubuntu Pro 24.04 LTSzulucryptpkg:deb/ubuntu/zulucrypt?arch=source&distro=esm-apps/nobleOther threatsAffected
  • <6.2.0-1ubuntu3+esm1
Fixed in
  • 6.2.0-1ubuntu3+esm1
Ubuntu Pro 22.04 LTSzulucryptpkg:deb/ubuntu/zulucrypt?arch=source&distro=esm-apps/jammyOther threatsAffected
  • <5.7.1-2ubuntu0.1~esm1
Fixed in
  • 5.7.1-2ubuntu0.1~esm1
Ubuntu Pro 20.04 LTSzulucryptpkg:deb/ubuntu/zulucrypt?arch=source&distro=esm-apps/focalOther threatsAffected
  • <5.7.0-1ubuntu0.1~esm1
Fixed in
  • 5.7.0-1ubuntu0.1~esm1
Ubuntu Pro 18.04 LTSzulucryptpkg:deb/ubuntu/zulucrypt?arch=source&distro=esm-apps/bionicOther threatsAffected
  • <5.4.0-2ubuntu0.1~esm2
Fixed in
  • 5.4.0-2ubuntu0.1~esm2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

The Debian zuluPolkit/CMakeLists.txt file for zuluCrypt through the zulucrypt_6.2.0-1 package has insecure PolicyKit allow_any/allow_inactive/allow_active settings that allow a local user to escalate their privileges to root.

References

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