CVE-2022-38928 — XPDF 4

XPDF 4.04 is vulnerable to Null Pointer Dereference in FoFiType1C.cc:2393.

01What is this vulnerability?

XPDF 4.04 is vulnerable to Null Pointer Dereference in FoFiType1C.cc:2393.

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

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-09-21T12:57:51.000Z
• Last modified: 2025-05-27T18:22:24.625Z

09References

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