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CVE-2026-55331

8.8 HIGH
  1. Published15 Sept 2026

Description

In IP Multimedia Subsystem, there is a possible out-of-bounds write due to an incorrect bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-587108.8
In DecodeFilmGrainParams of film_grain_dec.cc, there is a possible out-of-bounds write…
CVE-2026-553438.0
In decodeAmr of ImsMediaAudioPlayer.cpp, there is a possible out-of-bounds write due to…
CVE-2026-920438.8
Privilege escalation due to incorrect boundary conditions in the Audio/Video component.…
CVE-2026-920208.8
Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender…
CVE-2026-920148.8
Privilege escalation due to incorrect boundary conditions in the Graphics component.…
CVE-2026-920138.8
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL…

Frequently asked

Is CVE-2026-55331 being actively exploited?

CVE-2026-55331 is not in the CISA KEV catalog.

How severe is CVE-2026-55331?

CVE-2026-55331 has a CVSS 3.1 base score of 8.8, rated high.

How do I fix CVE-2026-55331?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-55331 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.