# CVE-2026-82077: PaperCut NG/MF: Remote Code Execution via Scan2Fax

- Exploited (CISA KEV): no
- Published: 2026-09-24
- CVSS: 7.3 HIGH (v4.0)
- EPSS: 0.8% (58th percentile)
- CWE: CWE-22, CWE-78

An improper limitation of a pathname to a restricted directory (path traversal) vulnerability in the Scan-to-Fax component of PaperCut NG and PaperCut MF allows an authenticated administrator to execute arbitrary commands on the underlying host via crafted fax provider settings.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | No public claim | — | — |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2026-10-21 | 27 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### F5

- 2026-10-21 · new · rule 200103696
  > Added: signature 200103696 "PaperCut NG/MF Remote Command Execution" (Command Execution, risk Medium), systems: Other Web Server. References: CVE-2026-82077.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2026-82077 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2026-82077