CVE-2026-39975

CRITICALPre-NVD 9.49.4
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (46th 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
9.4EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 9.4Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

Combodo iTop is a web-based IT service management tool. Prior to 3.2.3, unauthenticated users could delete the .readonly file on iTop instances, leading to code execution. This file, created during the setup process, prevents users from performing write actions. This issue has been fixed in version 3.2.3.

CVSS v3
9.4
EG Score
9.4CRITICALmedium confidence
EG Risk
43
EG Risk 43/100

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)
Severity94% × 45%
The EG Score, 9.4 of 10.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (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: The CVE record names the fixed release. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
46th
KEV
Not listed

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

The CVE record names the fixed release. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (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 24, 2026

Last Modified

October 12, 2026

Advisory Details (1)

Auto-updated Oct 2, 2026
Fix named in the CVE record. Sources: github.
GitHub advisoryMentions a patch (unverified)

Remote code execution using external auth variable value · Advisory · Combodo/iTop · GitHub

https://github.com/Combodo/iTop/security/advisories/GHSA-h823-537c-xwfh

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 54× 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.

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. 1 repeat row among the latest 98 is merged into the row it repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-10-13 14:09 UTCEG score recompute
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
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  8. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  10. 2026-10-10 12:32 UTCEG score recompute
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 46th percentile
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  15. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
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  17. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.6% · 46th percentile
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  21. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 46th percentile
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  23. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.6% · 46th percentile
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  1. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-09-30 20:17 UTCEG score recompute
  3. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 46th percentile
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  7. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 46th percentile
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  9. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
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  11. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  12. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.6% · 45th percentile
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  18. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 28th percentile
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  21. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 28th percentile
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  29. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  30. 2026-09-13 20:10 UTCEG score recompute
  31. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  32. 2026-09-12 18:21 UTCEG score recompute
  33. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  34. 2026-09-11 16:24 UTCEG score recompute
  35. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 28th percentile
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  37. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 28th percentile
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  39. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 28th percentile
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  41. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 27th percentile
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  43. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 27th percentile
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  49. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 27th percentile
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  59. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  60. 2026-08-29 00:21 UTCEG score recompute
  61. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 27th percentile
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  67. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 27th percentile
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  71. 2026-08-24 19:07 UTCEG score recomputeFirst assessed: 9.4 CRITICAL
  72. 2026-08-24 19:06 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-39975?
CVE-2026-39975 is a critical-severity vulnerability; its CVE record was published on August 24, 2026. Combodo iTop is a web-based IT service management tool. Prior to 3.2.3, unauthenticated users could delete the .readonly file on iTop instances, leading to code execution. This file, created during the setup process, prevents users from performing write actions. This issue has been fixed in version…
When was the CVE record for CVE-2026-39975 published?
The CVE record for CVE-2026-39975 was published on August 24, 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 October 12, 2026; the record at its source may have been updated since.
Is CVE-2026-39975 actively exploited?
CVE-2026-39975 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-39975?
CVE-2026-39975 has a CVSS base score of 9.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-39975?
The CVE record for CVE-2026-39975 names the fix: "This issue has been fixed in version 3.2.3."

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