CVE-2026-45751

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.3% (23rd 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
7.5EG
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: 0.3%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suricata's inspection-buffer helper could leave an inspection pointer referencing freed memory after a chained transform caused the backing buffer to be reallocated. The issue is reached during a specific network traffic processing, and requires a specific but not malicious rule. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, avoid rules that chain dotprefix transform after another one.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100

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)
Severity75% × 45%
The EG Score, 7.5 of 10.
Exploitation0.3% × 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 every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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.
EPSS PROB
0.3%
EPSS %ILE
23rd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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)60 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 partial (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 10, 2026

Last Modified

September 28, 2026

Advisory Details (3)

Auto-updated Sep 10, 2026
Patch available. Sources: github.
Web page

Open Information Security Foundation

https://redmine.openinfosecfoundation.org/issues/8537
Web page

Suricata 8.0.5 and 7.0.16 released! - Announcements - Suricata

https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315
GitHub advisoryMentions a patch (unverified)

detect/transform: use-after-free in dotprefix transform · Advisory · OISF/suricata · GitHub

https://github.com/OISF/suricata/security/advisories/GHSA-59q6-j4w8-8pjx

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
suricata1:7.0.10-1 ... 1:8.0.7-2~exp1 (29 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
suricata1:7.0.10-1 ... 1:8.0.5-1~bpo13+1 (19 versions)
  • every version up to 1:8.0.5-1: fixed in 1:8.0.5-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 51× 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. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  3. 2026-10-12 16:04 UTCEG score recompute
  4. 2026-10-11 19:46 UTCEG score recompute
  5. 2026-10-11 17:00 UTCEG score recompute
  6. 2026-10-11 14:26 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  8. 2026-10-10 20:08 UTCEG score recompute
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  10. 2026-10-10 08:07 UTCEG score recompute
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  12. 2026-10-08 23:44 UTCEG score recompute
  13. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  14. 2026-10-08 11:01 UTCEG score recompute
  15. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  16. 2026-10-06 23:27 UTCEG score recompute
  17. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  18. 2026-10-05 23:55 UTCEG score recompute
  19. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  20. 2026-10-04 23:52 UTCEG score recompute
  21. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  22. 2026-10-04 00:19 UTCEG score recompute
  23. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  24. 2026-10-03 00:48 UTCEG score recompute
  25. 2026-10-02 01:16 UTCEG score recompute
Show 36 more
  1. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  2. 2026-10-01 01:44 UTCEG score recompute
  3. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  4. 2026-09-30 01:54 UTCEG score recompute
  5. 2026-09-29 06:41 UTCEG score recompute
  6. 2026-09-28 18:56 UTCEG score recompute▲ 1.60
  7. 2026-09-28 18:55 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  8. 2026-09-28 03:20 UTCEG score recompute
  9. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  10. 2026-09-27 01:02 UTCEG score recompute
  11. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  12. 2026-09-24 20:11 UTCEG score recompute
  13. 2026-09-23 17:53 UTCEG score recompute
  14. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  15. 2026-09-22 15:35 UTCEG score recompute
  16. 2026-09-21 13:17 UTCEG score recompute
  17. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-09-20 11:00 UTCEG score recompute
  19. 2026-09-19 08:42 UTCEG score recompute
  20. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  21. 2026-09-18 06:25 UTCEG score recompute
  22. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  23. 2026-09-17 04:07 UTCEG score recompute
  24. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  25. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  26. 2026-09-16 01:46 UTCEG score recompute
  27. 2026-09-13 21:07 UTCEG score recompute
  28. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  29. 2026-09-12 18:49 UTCEG score recompute
  30. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  31. 2026-09-11 16:31 UTCEG score recompute
  32. 2026-09-11 15:19 UTCEG score recompute
  33. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  34. 2026-09-10 21:19 UTCEG score recompute
  35. 2026-09-10 20:30 UTCEG score recomputeFirst assessed: 5.9 MEDIUM
  36. 2026-09-10 20:29 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-45751?
CVE-2026-45751 is a high-severity vulnerability; its CVE record was published on September 10, 2026. Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suricata's inspection-buffer helper could leave an inspection pointer referencing freed memory after a chained transform caused the backing…
When was the CVE record for CVE-2026-45751 published?
The CVE record for CVE-2026-45751 was published on September 10, 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 28, 2026; the record at its source may have been updated since.
Is CVE-2026-45751 actively exploited?
CVE-2026-45751 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (23rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45751?
CVE-2026-45751 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-45751?
A fix for CVE-2026-45751 is available: update to the fixed version the vendor names in its advisory.

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