What is CVE-2022-40090?

CVE-2022-40090 is a medium-severity vulnerability in Libtiff, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 6.5/10. Published 2023-08-22.

How severe is CVE-2022-40090?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2022-40090 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Libtiff

CVE-2022-40090

An issue was discovered in function TIFFReadDirectory libtiff before 4.4.0 allows attackers to cause a denial of service via crafted TIFF file.

Published 2023-08-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (59.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000

Affected products

Libtiff

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

Public proof-of-concept exploits

firmianay/security-issues

References

gitlab.com/libtiff/libtiff/-/issues/455 (Exploit, Issue Tracking)
gitlab.com/libtiff/libtiff/-/merge_requests/386 (Patch, Issue Tracking)

Frequently asked questions

What is CVE-2022-40090?: CVE-2022-40090 is a medium-severity vulnerability in Libtiff, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 6.5/10. Published 2023-08-22.
How severe is CVE-2022-40090?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2022-40090 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.