What is CVE-2021-27804?

CVE-2021-27804 is a critical-severity vulnerability in Libjxl_project Libjxl, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2021-03-02.

How severe is CVE-2021-27804?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Libjxl_project Libjxl

CVE-2021-27804

JPEG XL (aka jpeg-xl) through 0.3.2 allows writable memory corruption.

Vulnerability class: Buffer Overflow

EPSS: 0.040 (89.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Libjxl_project Libjxl
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Mailing List, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (mailing-list, x_refsource_FULLDISC, Third Party Advisory)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-27804?: CVE-2021-27804 is a critical-severity vulnerability in Libjxl_project Libjxl, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2021-03-02.
How severe is CVE-2021-27804?: Critical severity. CVSS v3 base score is 9.8 out of 10.