How severe is CVE-2021-36692?

CVE-2021-36692 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-36692 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36692?

CVE-2021-36692 affects Libjxl Project Libjxl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36692?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-36692 published?

CVE-2021-36692 was published on 2021-08-30 and last updated on 2026-06-17.

CVE-2021-36692

CVE-2021-36692 is a medium-severity vulnerability in Libjxl Project Libjxl with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-369.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-369
Affected product: Libjxl Project Libjxl
Published: 2021-08-30
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2021-36692?: 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.
How severe is CVE-2021-36692?: CVE-2021-36692 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-36692 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36692?: CVE-2021-36692 affects Libjxl Project Libjxl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36692?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36692 published?: CVE-2021-36692 was published on 2021-08-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libjxl_project:libjxl:0.3.7:*:*:*:*:*:*:*

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