Is CVE-2023-1999 actively exploited?

No active exploitation of CVE-2023-1999 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-1999 be exploited remotely?

Yes. CVE-2023-1999 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-1999?

CVE-2023-1999 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2023-1999

HIGH

CVE-2023-1999

CWE-416Published: June 20, 2023· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode() function and loop through to free best.bw and assign best = trial pointer. The second loop will then return 0 because of an Out of memory error in VP8 encoder, the pointer is still assigned to trial and the AddressSanitizer will attempt a double free.

NVD Source

Technical Analysis

CVE-2023-1999 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.