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

7.3HighCVSS base score
0.84%Exploitation in 30 daysEPSS · top 42% of all CVEs
NoKnown exploitednot in CISA's KEV catalog
NonePublic exploitsnone known yet

Description

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.

Timeline

2026
28 Aug 2026
28 Aug 2026
ID reserved
By PaperCut
24 Sept 202627 days later
24 Sept 2026· 27 days later
Published
13 Oct 202619 days later
13 Oct 2026· 19 days later
Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-82077, by who scored it
Scored by	CVSS	Score	Vector
PaperCutCNA (assigner)	4.0	High7.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
NVDNVD · Awaiting Analysis	4.0	High7.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS (exploitation in 30 days): 0.84% · top 42% of all CVEs (15 Nov 2026)
CISA SSVC: Exploitation: none · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.3.

Affected products

PaperCut · PaperCut NG/MF
- affected < 24.1.10
- affected 25.0.0 – < 25.0.13
- affected 26.0.0 – < 26.0.5

References1

https://www.papercut.com/kb/Main/security-bulletin-sep-2026/ (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

[![CVE-2026-82077](https://cveledger.app/badge/CVE-2026-82077.svg)](https://cveledger.app/cve/CVE-2026-82077)

Record last updated 13 Oct 2026, 04:10 UTC.