CVE-2026-2016

MEDIUM

happyfish100 libfastcommon <1.0.84 - Buffer Overflow

Title source: llm
STIX 2.1

Description

A security vulnerability has been detected in happyfish100 libfastcommon up to 1.0.84. Affected by this vulnerability is the function base64_decode of the file src/base64.c. The manipulation leads to stack-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used. The identifier of the patch is 82f66af3e252e3e137dba0c3891570f085e79adf. Applying a patch is the recommended action to fix this issue.

References (8)

Core 8
Core References
Third Party Advisory, VDB Entry vdb-entry technical-description
https://vuldb.com/?id.344598
Permissions Required, VDB Entry signature permissions-required
https://vuldb.com/?ctiid.344598
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.743873
Exploit, Vendor Advisory issue-tracking
https://github.com/happyfish100/libfastcommon/issues/55
Exploit, Vendor Advisory exploit issue-tracking
https://github.com/happyfish100/libfastcommon/issues/55#issue-3836362577

Scores

CVSS v3 5.3
EPSS 0.0002
EPSS Percentile 3.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-119 CWE-121 CWE-787
Status published
Products (1)
happyfish100/libfastcommon < 1.0.84
Published Feb 06, 2026
Tracked Since Feb 18, 2026