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CVE-2026-25990VulnerabilityPublished Updated

Red Hat Security Advisory: Satellite 6.18.6 Async Update

Affects Red HatSource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-25990· High 8.6

Not known to be exploited · CVSS 8.6 High : upgrade Red Hat to 12.1.1 soon.

Data as of 5 Nov 2026, 15:49 UTC

CVSS 4.0 base score
8.6High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 12.1.1
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Feb 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 5 Nov 2026.

What to do

Upgrade Pillow to 12.1.1.

Affected software

ProductAffectedFixed in
python-pillowPillowAffected
  • >=10.3.0 <12.1.1
Fixed in
  • 12.1.1

AI-suggested

Apply the official Red Hat Satellite 6.18.6 update which includes patches for CVE-2026-25990, CVE-2026-27830, and CVE-2026-32282. Ensure all previously released errata relevant to your system are applied before updating. Follow Red Hat's documented update procedures at https://docs.redhat.com/en/documentation/red_hat_satellite/6.18/html/updating_red_hat_satellite/index. No alternative mitigations are noted; patching is the recommended and supported remediation.

Description

Red Hat Satellite is a system management solution that allows organizations to configure and maintain their systems without the necessity to provide public Internet access to their servers or other client systems. It performs provisioning and configuration management of predefined standard operating environments. Security Fix(es): * python3.12-pillow: Pillow: Out-of-bounds Write via Specially Crafted PSD Image (CVE-2026-25990) * candlepin: com.mchange/c3p0: c3p0: Arbitrary Code Execution via deserialization of crafted objects (CVE-2026-27830) * dynflow-utils: Root.Chmod can follow symlinks out of the root (CVE-2026-32282)

References

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