CVE-2026-22259

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 59% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, specially crafted traffic can cause Suricata to consume large amounts of memory while parsing DNP3 traffic. This can lead to the process slowing down and running out of memory, potentially leading to it getting killed by the OOM killer. Versions 8.0.3 or 7.0.14 contain a patch. As a workaround, disable the DNP3 parser in the suricata yaml (disabled by default).

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
44%
KEV
Not listed

Published

January 27, 2026

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Aug 6, 2026
Patch available. Sources: github_commit, github.
generic

Open Information Security Foundation

https://redmine.openinfosecfoundation.org/issues/8181
github Patch Available

dnp3: excessive memory consumption · Advisory · OISF/suricata · GitHub

https://github.com/OISF/suricata/security/advisories/GHSA-878h-2x6v-84q9
github_commit Patch Available

commit 63225d5f8ef6 (OISF/suricata)

Patch available: OISF/suricata suricata-7.0.14 (contains commit 63225d5f8ef6)

https://github.com/OISF/suricata/commit/63225d5f8ef64cc65164c0bb1800730842d54942
github_commit Patch Available

commit 50cac2e2465c (OISF/suricata)

Patch available: OISF/suricata suricata-8.0.3 (contains commit 50cac2e2465c)

https://github.com/OISF/suricata/commit/50cac2e2465ca211eabfa156623e585e9037bb7e

Affected Packages

(3 across 3 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
suricata1:6.0.1-3 ... 1:8.0.6-1~bpo13+1 (75 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
suricata1:7.0.10-1, 1:7.0.10-1+deb13u1, 1:7.0.10-1+deb13u21:7.0.10-1+deb13u3—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
suricata1:7.0.10-1 ... 1:8.0.3-1~bpo13+1 (14 versions)1:8.0.3-1—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 155 total refreshes for this CVE.

  1. 2026-09-20 20:15 UTCEPSS rescore
  2. 2026-09-19 19:03 UTCOSV refresh
  3. 2026-09-18 19:27 UTCEPSS rescore
  4. 2026-09-16 14:07 UTCEPSS rescore
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  17. 2026-09-01 04:39 UTCEPSS rescore
  18. 2026-08-31 22:34 UTCOSV refresh
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  24. 2026-08-25 13:48 UTCEPSS rescore
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  1. 2026-08-21 23:49 UTCEPSS rescore
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  3. 2026-08-19 17:03 UTCEPSS rescore
  4. 2026-08-18 13:48 UTCEPSS rescore
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  6. 2026-08-16 14:56 UTCEPSS rescore
  7. 2026-08-16 02:14 UTCEPSS rescore
  8. 2026-08-15 01:30 UTCEPSS rescore
  9. 2026-08-14 12:10 UTCEG score recompute
  10. 2026-08-13 22:00 UTCEPSS rescore
  11. 2026-08-13 04:14 UTCEG score recompute
  12. 2026-08-12 13:50 UTCEPSS rescore
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  15. 2026-08-09 17:14 UTCEG score recompute
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  20. 2026-08-06 04:52 UTCEG score recompute
  21. 2026-08-05 19:17 UTCEPSS rescore
  22. 2026-08-04 15:10 UTCEPSS rescore
  23. 2026-08-04 10:38 UTCEPSS rescore
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  25. 2026-08-02 22:01 UTCEG score recompute
  26. 2026-08-02 02:26 UTCEPSS rescore
  27. 2026-08-01 04:15 UTCEPSS rescore
  28. 2026-07-31 06:12 UTCOSV refresh
  29. 2026-07-30 01:30 UTCEPSS rescore
  30. 2026-07-27 14:13 UTCEPSS rescore
  31. 2026-07-26 14:54 UTCEPSS rescore
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  38. 2026-07-23 03:06 UTCEG score recompute
  39. 2026-07-22 14:08 UTCEPSS rescore
  40. 2026-07-21 15:24 UTCEPSS rescore
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  42. 2026-07-20 17:08 UTCEPSS rescore
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  45. 2026-07-19 02:29 UTCEPSS rescore
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  49. 2026-07-16 17:03 UTCEPSS rescore
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  55. 2026-07-13 22:30 UTCEPSS rescore
  56. 2026-07-13 13:38 UTCOSV refresh
  57. 2026-07-13 06:13 UTCEPSS rescore
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  59. 2026-07-12 05:46 UTCEPSS rescore
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  61. 2026-07-11 08:27 UTCEPSS rescore
  62. 2026-07-09 19:10 UTCEPSS rescore
  63. 2026-07-08 15:15 UTCEPSS rescore
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  65. 2026-07-07 13:46 UTCEPSS rescore
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  67. 2026-07-06 16:27 UTCEPSS rescore
  68. 2026-07-06 02:23 UTCEPSS rescore
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  73. 2026-07-01 15:06 UTCEPSS rescore
  74. 2026-07-01 15:06 UTCEPSS rescore
  75. 2026-06-30 23:22 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-22259?
CVE-2026-22259 is a high vulnerability published on January 27, 2026. Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, specially crafted traffic can cause Suricata to consume large amounts of memory while parsing DNP3 traffic. This can lead to the process slowing down and running out of memory, potentially leading to it getting…
When was CVE-2026-22259 disclosed?
CVE-2026-22259 was first published in the National Vulnerability Database on January 27, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-22259 actively exploited?
CVE-2026-22259 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 56.3% of all scored CVEs.
What is the CVSS score of CVE-2026-22259?
CVE-2026-22259 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-22259?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-22259, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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