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CVE-2026-63550

6.5 · MEDIUM

The MMS BER decoder contains a boundary-handling flaw in the processing of certain fields within confirmed-request messages.

Published Jul 30, 2026CWE-125EPSS 0.44%

Overview

CVE-2026-63550 is a medium-severity vulnerability. It was published on July 30, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-10.jsonCISAwww.cisa.gov/news-events/ics-advisories/icsa-26-211-10

How CyberStrike helps

Frequently asked questions

What is CVE-2026-63550?

CVE-2026-63550 is a medium-severity vulnerability. It was published on July 30, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-63550?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-63550?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-63550?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-63550 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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