CVE-2026-63550
Medium · 6.5CVSS
6.5
EPSS
0.4%
Published
Jul 30, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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