🛡️ CVE-2026-63550

🟡 CVSS 6.5 — Medium ✅ No Known Exploit CWE-125 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

The MMS BER decoder contains a boundary-handling flaw in the processing

of certain fields within confirmed-request messages. When a crafted

BER-encoded element is received over an established MMS session (TCP

port 102), the decoder may advance its internal read position

incorrectly, leading to a heap out-of-bounds read. This condition causes

the MMS handling process to terminate unexpectedly, resulting in a

denial-of-service.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2026-63550 is classified as CWE-125: Out-of-bounds Read. The code reads past the limits of a buffer, exposing adjacent memory contents or crashing the process.

Affected software

CVE-2026-63550 is recorded against 1 package.

  • unknown

Timeline and source

Published on 30 July 2026 and last revised on 31 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com
www.cisa.gov

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE CWE-125
Public Exploit ✅ No
Source NVD
Published 2026-07-30
Updated 2026-08-11
Modified 2026-07-31
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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