Buffer Overflow Vulnerability in ASN1SCC Open Source ASN.1 Compiler
CVE-2026-75614

8.1HIGH

Key Information:

Vendor

Esa

Status
Asn1scc
Vendor
CVE Published:
5 November 2026

What is CVE-2026-75614?

A vulnerability exists in the ASN1SCC open source ASN.1 compiler prior to version 4.7.0.1 where the BitStream_DecodeConstraintWholeNumber function does not properly validate constrained integer values. This oversight allows attackers to craft inputs that exceed the declared range, resulting in buffer overflows. Such attacks can lead to heap or stack corruption, crashes, or unauthorized code execution. The vulnerability has been addressed in version 4.7.0.1.

Affected Version(s)

asn1scc < 4.7.0.1

References

https://github.com/esa/asn1scc/security/advisories/GHSA-8...
x_refsource_CONFIRM
https://github.com/esa/asn1scc/commit/fe6ab763bc60d8a2def...
x_refsource_MISC
https://github.com/esa/asn1scc/releases/tag/4.7.0.1
x_refsource_MISC

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.