CVE-2021-36692 describes a Divide By Zero vulnerability in libjxl v0.3.7, specifically within the jxl::DecodeImageAPNG() function in lib/extras/codec_apng.cc. This flaw allows an unauthenticated attacker to trigger a denial of service by providing a specially crafted APNG file during encoding with cjxl. Rated as Medium severity (CVSS 6.5), the attack requires user interaction (UI:R) but can be executed over the network (AV:N) with low complexity (AC:L), leading to high availability impact (A:H). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
0.3.7CPE matchmatch criteria | cpe:2.3:a:libjxl_project:libjxl:0.3.7:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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