Quick answers
- Is CVE-2026-82077 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-82077 being exploited in the wild.
- How severe is CVE-2026-82077?
- Informational severity, published 24 September 2026.
- Which products and versions are affected?
- PaperCut NG; PaperCut MF.
- Is there a fix for CVE-2026-82077?
- 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-2026-82077 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-82077?
- Check whether you run PaperCut Mf or PaperCut Ng. 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 path traversal vulnerability in the Scan-to-Fax component fails to properly validate fax provider settings, allowing crafted pathname inputs to escape intended directory restrictions. An authenticated administrator can exploit this to achieve arbitrary command execution on the underlying host. The vulnerability requires administrator-level authentication and malicious configuration of fax provider settings.
Affected products
- PaperCut NG
- PaperCut MF
Timeline
- 2026-09-24: disclosed