Quick answers
- Is CVE-2026-64612 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-64612 being exploited in the wild.
- How severe is CVE-2026-64612?
- High severity, with a CVSS score of 7.5, published 20 July 2026.
- Which products and versions are affected?
- OpenPrinting Cups-Filters through 1.28.17; OpenPrinting Libcupsfilters through 2.1.1.
- Is there a fix for CVE-2026-64612?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-64612 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-64612?
- Check whether you run OpenPrinting Cups-Filters, OpenPrinting Libcupsfilters, Red Hat Enterprise Linux 10 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A flaw exists in the _cfImageReadPNG() and _cupsImageReadPNG() functions within cupsfilters/image-png.c. The software initializes a libpng reader using png_create_read_struct without implementing a custom error handler or a setjmp recovery frame. Consequently, when libpng encounters a malformed PNG file, it triggers the default error handler which calls abort(), leading to a SIGABRT and terminating the filter process. This allows a remote, unauthenticated attacker to cause a denial of service (DoS) for in-flight print jobs. As of the advisory date, no upstream fix is available.
Affected products
- OpenPrinting cups-filters through 1.28.17
- OpenPrinting libcupsfilters through 2.1.1
- Red Hat Red Hat Enterprise Linux 8
- Red Hat Red Hat Enterprise Linux 9
- Red Hat Red Hat Enterprise Linux 10
Timeline
- 2026-07-20: disclosed
- 2026-07-20: advisory