9.9

CVE-2026-72841: openwrt luci External Control of File Name or Path

CVSS: 9.9v3.1CriticalDeferred
Published 13-08-2026Last modified 30-09-2026
Open JSON

Vulnerability summary

CVE-2026-72841 is a critical (CVSS 9.9) External Control of File Name or Path vulnerability in openwrt luci. EPSS estimates a 0.62% chance of exploitation in the next 30 days, higher than 48.5% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.9/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.62%
0%100%
Low · +0.08 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-08-2026
    PublishedVulnerability first disclosed.
  2. 30-09-2026
    Last modifiedVulnerability information updated.

Description

luci-app-openvpn fails to properly validate the instance_name2 parameter during file upload, allowing authenticated users to perform path traversal and write arbitrary files outside the intended directory. Attackers can upload malicious payloads to gain persistent root code execution by placing SSH keys in system directories accessible on reboot.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.62%

Chance of exploitation in the next 30 days

Percentile

49%

Versus all other CVEs

30-day change

+0.08 pp

From 0.53% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.62%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Openwrt1 product
  • luci< 24.10.7 | ≥ 25.12.0, < 25.12.4

1 vendor · 1 product

References

2 links