CVE-2025-55398

CRITICAL

mouse07410 asn1c thru 0.9.29 - Improper Validation of Specified Quantity in UPER Decoder

Title source: llm
STIX 2.1

Description

An issue was discovered in mouse07410 asn1c thru 0.9.29 (2025-03-20) - a fork of vlm asn1c. In UPER (Unaligned Packed Encoding Rules), asn1c-generated decoders fail to enforce INTEGER constraints when the bound is positive and exceeds 32 bits in length, potentially allowing incorrect or malicious input to be processed.

References (1)

Core 1
Core References

Scores

CVSS v3 9.8
EPSS 0.0034
EPSS Percentile 26.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-1284
Status published
Published Aug 22, 2025
Tracked Since Feb 18, 2026