CVE-2026-82619

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory (severity: LOW) published 2026-08-31. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 4.3Exploit: Elevated riskExposed: 0

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

A vulnerability was identified in Systerel S2OPC up to 1.7.3. The impacted element is the function monitored_item_event_filter_treatment_bs__init_event_filter_ctx_and_result of the file src/ClientServer/services/bgenc/subscription_mgr.c. Such manipulation of the argument EventFilter leads to use after free. The attack may be performed from remote. The exploit is publicly available and might be used. The name of the patch is a4cee16a851b971be447a6ed531173702c722b99. It is best practice to apply a patch to resolve this issue.

CVSS v3
4.3
EG Score
4.3(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity43% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

August 31, 2026

Last Modified

August 31, 2026

Advisory Details (3)

Auto-updated Aug 31, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Ticket #1774: Modify MI service: avoid possible double free from invalid client request (a4cee16a) · Commits · Systerel / S2OPC · GitLab

https://gitlab.com/systerel/S2OPC/-/commit/a4cee16a851b971be447a6ed531173702c722b99
generic

Ticket #1774: Modify MI service: avoid possible double free from invalid client request (!1839) · Merge requests · Systerel / S2OPC · GitLab

https://gitlab.com/systerel/S2OPC/-/merge_requests/1839
generic🟡 PoC Available

Server-side heap-use-after-free in ModifyMonitoredItems event-filter result handling (#1797) · Issues · Systerel / S2OPC · GitLab

https://gitlab.com/systerel/S2OPC/-/work_items/1797

Vendor Advisories for CVE-2026-82619(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 72× 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.

  1. 2026-09-24 14:04 UTCEPSS rescore
  2. 2026-09-24 10:50 UTCEG score recompute
  3. 2026-09-24 10:50 UTCGHSA enrichment
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 08:30 UTCEG score recompute
  6. 2026-09-23 08:30 UTCGHSA enrichment
  7. 2026-09-22 16:01 UTCEPSS rescore
  8. 2026-09-22 06:10 UTCEG score recompute
  9. 2026-09-22 06:10 UTCGHSA enrichment
  10. 2026-09-21 21:09 UTCEPSS rescore
  11. 2026-09-21 03:49 UTCEG score recompute
  12. 2026-09-21 03:49 UTCGHSA enrichment
  13. 2026-09-20 20:16 UTCEPSS rescore
  14. 2026-09-20 01:29 UTCEG score recompute
  15. 2026-09-20 01:29 UTCGHSA enrichment
  16. 2026-09-18 23:09 UTCEG score recompute
  17. 2026-09-18 23:08 UTCGHSA enrichment
  18. 2026-09-18 19:28 UTCEPSS rescore
  19. 2026-09-17 20:48 UTCEG score recompute
  20. 2026-09-17 20:48 UTCGHSA enrichment
  21. 2026-09-16 15:56 UTCEG score recompute
  22. 2026-09-16 15:56 UTCGHSA enrichment
  23. 2026-09-16 14:08 UTCEPSS rescore
  24. 2026-09-16 05:15 UTCEPSS rescore
  25. 2026-09-15 13:35 UTCEG score recompute
Show 47 more
  1. 2026-09-15 13:35 UTCGHSA enrichment
  2. 2026-09-15 03:12 UTCEPSS rescore
  3. 2026-09-15 03:12 UTCEPSS rescore
  4. 2026-09-14 11:14 UTCEG score recompute
  5. 2026-09-14 11:14 UTCGHSA enrichment
  6. 2026-09-13 08:54 UTCEG score recompute
  7. 2026-09-13 08:54 UTCGHSA enrichment
  8. 2026-09-12 06:34 UTCEG score recompute
  9. 2026-09-12 06:34 UTCGHSA enrichment
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-11 14:53 UTCEPSS rescore
  12. 2026-09-11 04:13 UTCEG score recompute
  13. 2026-09-11 04:13 UTCGHSA enrichment
  14. 2026-09-10 01:53 UTCGHSA enrichment
  15. 2026-09-08 23:31 UTCEG score recompute
  16. 2026-09-08 23:31 UTCGHSA enrichment
  17. 2026-09-08 22:01 UTCEPSS rescore
  18. 2026-09-07 11:14 UTCEG score recompute
  19. 2026-09-07 11:14 UTCGHSA enrichment
  20. 2026-09-06 13:48 UTCEPSS rescore
  21. 2026-09-06 08:53 UTCEG score recompute
  22. 2026-09-06 08:53 UTCGHSA enrichment
  23. 2026-09-05 15:31 UTCEPSS rescore
  24. 2026-09-05 06:33 UTCEG score recompute
  25. 2026-09-05 06:33 UTCGHSA enrichment
  26. 2026-09-04 05:07 UTCEPSS rescore
  27. 2026-09-04 04:07 UTCGHSA enrichment
  28. 2026-09-03 01:44 UTCEG score recompute
  29. 2026-09-03 01:44 UTCGHSA enrichment
  30. 2026-09-02 14:12 UTCEPSS rescore
  31. 2026-09-01 23:23 UTCEG score recompute
  32. 2026-09-01 23:23 UTCGHSA enrichment
  33. 2026-09-01 13:54 UTCEPSS rescore
  34. 2026-09-01 04:40 UTCEPSS rescore
  35. 2026-09-01 04:40 UTCEPSS rescore
  36. 2026-08-31 21:03 UTCEG score recompute
  37. 2026-08-31 21:03 UTCGHSA enrichment
  38. 2026-08-31 16:24 UTCEG score recompute
  39. 2026-08-31 16:23 UTCGHSA enrichment
  40. 2026-08-31 16:20 UTCNVD updateCVSS v4 → 2.1
  41. 2026-08-31 15:53 UTCEG score recompute
  42. 2026-08-31 15:52 UTCGHSA enrichment
  43. 2026-08-31 15:49 UTCMITRE cvelistV5CVSS v4 → 5.3
  44. 2026-08-31 06:23 UTCEG score recompute
  45. 2026-08-31 06:20 UTCNVD updateCVSS v4 → 2.1
  46. 2026-08-31 05:24 UTCEG score recompute
  47. 2026-08-31 05:23 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-82619?
CVE-2026-82619 is a medium vulnerability published on August 31, 2026. A vulnerability was identified in Systerel S2OPC up to 1.7.3. The impacted element is the function monitoreditemeventfiltertreatmentbsiniteventfilterctxandresult of the file src/ClientServer/services/bgenc/subscription_mgr.c. Such manipulation of the argument EventFilter leads to use after free.…
When was CVE-2026-82619 disclosed?
CVE-2026-82619 was first published in the National Vulnerability Database on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82619 actively exploited?
CVE-2026-82619 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 57.5% of all scored CVEs.
What is the CVSS score of CVE-2026-82619?
CVE-2026-82619 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-82619?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82619, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-82619

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