CVE-2026-75600

HIGHNVD 8.88.8
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.8% (56th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3

Also known asEUVD-2026-88391 (ENISA EUVD)Source: ENISA EUVD

8.8EG
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: 0.8%CVSS: 8.8Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

FreePBX is an open source IP PBX. Prior to version 17.0.9, authenticated users who are authorized to access the GraphQL api module interface of FreePBX are able to execute arbitrary shell commands. Authenticated access to the api module is required. The PBX API module's documentation generator accepts an authenticated host parameter and uses it to build a shell command. The code path validates the generated OAuth access token before execution, but it does not validate or escape host. Compromise results in authenticated arbitrary shell command execution as the FreePBX web/PBX service user (typically asterisk.). This issue has been patched in version 17.0.9.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity88% × 45%
Impact severity (EG Severity): CVSS 8.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.8% × 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
0.8%
EPSS %ILE
56th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is its impact severity (EG Severity), not escalated.

EG Severity
8.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.8% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

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.

The score's inputs: 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

September 28, 2026

Last Modified

October 16, 2026

Advisory Details (1)

Auto-updated Sep 28, 2026
Fix named in the CVE record. Sources: github.
GitHub advisoryMentions a patch (unverified)

Authenticated API generatedocs Host Command Injection · Advisory · FreePBX/security-reporting · GitHub

https://github.com/FreePBX/security-reporting/security/advisories/GHSA-79rg-3xp6-rqq6

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 46× 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.

  1. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  3. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  4. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  5. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  6. 2026-10-27 21:09 UTCEG score recompute
  7. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  8. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  9. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  10. 2026-10-25 14:02 UTCEG score recompute
  11. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  12. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  13. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  14. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  15. 2026-10-20 18:25 UTCEG score recompute
  16. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  17. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  18. 2026-10-18 03:13 UTCEG score recompute
  19. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  20. 2026-10-16 18:29 UTCEG score recompute▲ 0.20
  21. 2026-10-16 18:25 UTCNVD updateCVSS v3 → 8.8
  22. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  23. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  24. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  25. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.8% · 54th percentile
Show 33 more
  1. 2026-10-13 07:20 UTCEG score recompute
  2. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  3. 2026-10-12 15:39 UTCEG score recompute
  4. 2026-10-11 19:24 UTCEG score recompute
  5. 2026-10-11 16:40 UTCEG score recompute
  6. 2026-10-11 13:59 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  8. 2026-10-11 03:30 UTCEG score recompute
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  10. 2026-10-10 03:28 UTCEG score recompute
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  12. 2026-10-09 03:50 UTCEG score recompute
  13. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  14. 2026-10-08 02:07 UTCEG score recompute
  15. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  16. 2026-10-07 02:22 UTCEG score recompute
  17. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  18. 2026-10-06 02:44 UTCEG score recompute
  19. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  20. 2026-10-03 15:32 UTCEG score recompute
  21. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  22. 2026-10-03 03:42 UTCEG score recompute
  23. 2026-10-02 04:01 UTCEG score recompute
  24. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  25. 2026-09-30 16:34 UTCEG score recompute
  26. 2026-09-29 16:41 UTCEG score recompute
  27. 2026-09-29 15:38 UTCEG score recompute
  28. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  29. 2026-09-29 04:31 UTCEG score recompute
  30. 2026-09-29 04:00 UTCEG score recompute
  31. 2026-09-28 18:20 UTCEG score recompute
  32. 2026-09-28 17:47 UTCEG score recomputeFirst assessed: 8.6 HIGH
  33. 2026-09-28 17:46 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-75600?
CVE-2026-75600 is a high-severity vulnerability; its CVE record was published on September 28, 2026. FreePBX is an open source IP PBX. Prior to version 17.0.9, authenticated users who are authorized to access the GraphQL api module interface of FreePBX are able to execute arbitrary shell commands. Authenticated access to the api module is required. The PBX API module's documentation generator…
When was the CVE record for CVE-2026-75600 published?
The CVE record for CVE-2026-75600 was published on September 28, 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 16, 2026; the record at its source may have been updated since.
Is CVE-2026-75600 actively exploited?
CVE-2026-75600 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (56th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75600?
CVE-2026-75600 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-75600?
The CVE record for CVE-2026-75600 names the fix: "This issue has been patched in version 17.0.9."

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