CVE-2026-53545

CRITICALPre-NVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This critical-severity CVE scores 9.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.7% (52nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. Prior to 2.3.2, the DELETE /ssh/tunnel/disconnect/:tunnelName teardown path in src/backend/ssh/tunnel.ts interpolates endpointPort, sourcePort, endpointUsername, and endpointIP into single-quoted pkill -f patterns. An authenticated user who can edit a tunnel host field can include a single quote to terminate the pattern and append a shell command, which executes when the tunnel is disconnected. Successful exploitation runs arbitrary commands on the source SSH host with the privileges of the connected SSH account. This issue is fixed in version 2.3.2.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
The EG Score, 9.8 of 10.
Exploitation0.7% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.7%
EPSS %ILE
52nd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 19, 2026

Last Modified

September 9, 2026

Advisory Details (3)

Auto-updated Oct 8, 2026
Patch available. Sources: github_pr, github_release, github.
GitHub advisoryMentions a patch (unverified)

Remote Code Execution via Tunnel Disconnect pkill Command Injection · Advisory · Termix-SSH/Termix · GitHub

https://github.com/Termix-SSH/Termix/security/advisories/GHSA-5p86-jgr7-4hwx
GitHub release Patch Available

release-2.3.2

Patch available: Termix-SSH/Termix release-2.3.2-tag

https://github.com/Termix-SSH/Termix/releases/tag/release-2.3.2-tag
GitHub pull request

v2.3.2

Fix merged in Termix-SSH/Termix PR #874 on 2026-06-04 — awaiting tagged release

https://github.com/Termix-SSH/Termix/pull/874

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 14× in last 7d / 53× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 102 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 2 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 09:17 UTCEG score recompute
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  3. 2026-10-13 06:31 UTCEG score recompute
  4. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
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  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
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  1. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  2. 2026-09-30 20:33 UTCEG score recompute
  3. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
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  5. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
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  7. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  8. 2026-09-27 16:09 UTCEG score recompute
  9. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
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  11. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
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  13. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
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  15. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  16. 2026-09-22 19:48 UTCEG score recompute
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  19. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  20. 2026-09-19 18:31 UTCEG score recompute
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  22. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 44th percentile
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  25. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
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  29. 2026-09-13 20:31 UTCEG score recompute
  30. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  31. 2026-09-12 17:08 UTCEG score recompute
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  33. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
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  36. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
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  74. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  75. 2026-08-19 21:19 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-53545?
CVE-2026-53545 is a critical-severity vulnerability; its CVE record was published on August 19, 2026. Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. Prior to 2.3.2, the DELETE /ssh/tunnel/disconnect/:tunnelName teardown path in src/backend/ssh/tunnel.ts interpolates endpointPort, sourcePort, endpointUsername, and endpointIP into…
When was the CVE record for CVE-2026-53545 published?
The CVE record for CVE-2026-53545 was published on August 19, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 9, 2026; the record at its source may have been updated since.
Is CVE-2026-53545 actively exploited?
CVE-2026-53545 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (52nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53545?
CVE-2026-53545 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-53545?
A fix for CVE-2026-53545 is available: update to the fixed version the vendor names in its advisory.

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