CVE-2026-24799 A heap-based buffer over-read or buffer overflow in davisking/dlib

Medium 5.2 Published Updated

A heap-based buffer overflow in dlib's zlib module allows attackers to execute arbitrary code or cause denial of service via crafted input.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2026-24799?

CVE-2026-24799 is a medium-severity memory corruption vulnerability in davisking dlib, published on 27 Jan 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in davisking dlib (dlib/external/zlib modules). This vulnerability is associated with program files inflate.C.

This issue affects dlib: before v19.24.9.

Weakness: CWE-787, CWE-120

Which versions are affected by CVE-2026-24799?

Linux distribution packages (1)
dlib openSUSE:TumbleweedAll versions20.0.1-1.1

How do I fix CVE-2026-24799?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-24799 being exploited?

There is no known exploitation of CVE-2026-24799 in the wild and no public exploit code.

Sources

Also known as AZL-75818, AZL-75824, AZL-75827, AZL-75833, AZL-75839, AZL-75842 and 2 more.

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