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VulnerabilityPublished Updated

CVE-2026-79766: Termix · OS Command Injection

Affects TermixSource CVE Database V5

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Not known to be exploited · CVSS 9.1 Critical : upgrade to 2.5.1 as a priority.

Data as of 8 Nov 2026, 23:24 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.5.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.

What to do

Upgrade Termix and termix-ssh/Termix to 2.5.1.

Affected software

ProductAffectedFixed in
Termix-SSHTermixAffected
  • >=2.4.1 <2.5.1
Fixed in
  • 2.5.1
GitHubtermix-ssh/Termixpkg:github/termix-ssh/TermixOther threatsAffected
  • >=2.4.1 <2.5.1
Fixed in
  • 2.5.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch is available and the vulnerability is fixed in Termix version 2.5.1. Users should upgrade to version 2.5.1 or later to remediate this issue. Since this is a cloud service, the vendor manages remediation for hosted environments; verify with the vendor advisory for cloud instances. No additional mitigation steps are indicated.

Description

Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. From 2.4.1 until 2.5.1, an authenticated Termix administrator can store attacker-controlled domain and email values through PATCH /users/acme-ssl-settings and trigger their interpolation into a certbot shell command through POST /users/acme-ssl-request. In src/backend/database/routes/acme-ssl-routes.ts, child_process.execSync invokes /bin/sh -c with those values only wrapped in double quotes, so shell metacharacters can execute arbitrary operating-system commands as the Termix backend process. Both HTTP webroot and DNS Cloudflare challenge modes are affected, and compromise exposes Termix databases, process secrets, stored credentials, and network reachability. This issue is fixed in version 2.5.1.

References

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