libjxl v0.3.7 is affected by a Divide By Zero in issue in lib/extras/codec_apng.cc jxl::DecodeImageAPNG(). When encoding a malicous APNG file using cjxl, an attacker can trigger a denial of service.
CVE-2021-36692
MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 46% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, nvd
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 6.5Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.5
- EG Score
- 6.5(medium)
- EPSS
- 65.1%
- KEV
- Not listed
Published
August 30, 2021
Last Modified
November 21, 2024
References (6)
- cve@mitrehttps://github.com/libjxl/libjxl/commit/7dfa400ded53919d986c5d3d23446a09e0cf481b
- cve@mitrehttps://github.com/libjxl/libjxl/issues/308
- cve@mitrehttps://github.com/libjxl/libjxl/pull/313
- af854a3a-2127-422b-91ae-364da2661108https://github.com/libjxl/libjxl/commit/7dfa400ded53919d986c5d3d23446a09e0cf481b
- af854a3a-2127-422b-91ae-364da2661108https://github.com/libjxl/libjxl/issues/308
- af854a3a-2127-422b-91ae-364da2661108https://github.com/libjxl/libjxl/pull/313
Frequently asked(5)
What is CVE-2021-36692?
CVE-2021-36692 is a medium vulnerability published on August 30, 2021. libjxl v0.3.7 is affected by a Divide By Zero in issue in lib/extras/codec_apng.cc jxl::DecodeImageAPNG(). When encoding a malicous APNG file using cjxl, an attacker can trigger a denial of service.
When was CVE-2021-36692 disclosed?
CVE-2021-36692 was first published in the National Vulnerability Database on August 30, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-36692 actively exploited?
CVE-2021-36692 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 65.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-36692?
CVE-2021-36692 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2021-36692?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-36692, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2021-36692
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