mouse07410 asn1c up to 1.4 INTEGER_oer.c out-of-bounds

Summaryinfo

A vulnerability was found in mouse07410 asn1c up to 1.4. It has been classified as critical. Affected by this issue is some unknown functionality of the file INTEGER_oer.c. This manipulation causes out-of-bounds. This vulnerability is registered as CVE-2026-45615. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in mouse07410 asn1c up to 1.4. It has been declared as critical. Affected by this vulnerability is an unknown code block of the file INTEGER_oer.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

mouse07410/asn1c is an ASN.1 compiler. In 1.4 and earlier, a memory safety vulnerability was identified in the OER decoding skeleton files generated by asn1c (specifically INTEGER_oer.c). When parsing a maliciously crafted, zero-length OER payload for a variable-length, non-negative INTEGER type, the decoder fails to validate the required bytes before extracting the Most Significant Bit (MSB). This forces a precise 1-byte Heap Out-of-Bounds (OOB) Read. Because asn1c generated code is primarily deployed to parse untrusted network inputs (such as V2X network protocols, 5G telecom headers, or X.509 certificates), when the decoder processes untrusted network-originated input, a remote attacker can exploit this to cause a Denial of Service (DoS) or trigger incorrect integer interpretation in downstream applications (e.g., protocol state poisoning or logic bypass).

The advisory is shared at github.com. This vulnerability is known as CVE-2026-45615 since 05/12/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/29/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• mouse07410

Name

• asn1c

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4

Website

• Product: https://github.com/mouse07410/asn1c/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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