CVE-2025-13151
Unknown
Unknown - Not Provided
Stack-Based Buffer Overflow in libtasn1 v4.20.0 ASN.1 Parsing
Publication date: 2026-01-07
Last updated on: 2026-02-02
Assigner: CERT/CC
Description
Description
Stack-based buffer overflow in libtasn1 version: v4.20.0. The function fails to validate the size of input data resulting in a buffer overflow in asn1_expend_octet_string.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| gnutls | libtasn1 | 4.20.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a stack-based buffer overflow in libtasn1 version 4.20.0. It occurs because the function asn1_expend_octet_string fails to properly validate the size of input data, which can lead to a buffer overflow.
How can this vulnerability impact me? :
The vulnerability can lead to a buffer overflow, which may cause a denial of service or potentially allow an attacker to execute arbitrary code, impacting the availability of the affected system.
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