CVE-2022-41843 — An issue was discovered in Xpdf 4

An issue was discovered in Xpdf 4.04. There is a crash in convertToType0 in fofi/FoFiType1C.cc, a different vulnerability than CVE-2022-38928.

01What is this vulnerability?

An issue was discovered in Xpdf 4.04. There is a crash in convertToType0 in fofi/FoFiType1C.cc, a different vulnerability than CVE-2022-38928.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

08Timeline

• Published: 2022-09-30T04:21:36.000Z
• Last modified: 2025-05-20T19:40:18.943Z

09References

• forum.xpdfreader.com — https://forum.xpdfreader.com/viewtopic.php?f=3&t=42325&sid=7b08ba9a518a99ce3c5ff…
• forum.xpdfreader.com — https://forum.xpdfreader.com/viewtopic.php?f=1&t=42344