CVE-2026-90782

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreMEDIUM confidence

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

Score 5.3 from GitHub Security Advisory published 2026-09-13. A secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 5.3Exploit: No code on recordExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

S2OPC through 1.7.3 contains a null pointer dereference in msg_subscription_publish_bs__alloc_notification_message_items() where a failed allocation for DataChangeNotification is overwritten by a successful allocation for EventNotificationList. Attackers can trigger heap allocation failures on sessions with both data-change and event notifications to cause the server process to terminate.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100

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)
Severity53% × 45%
The EG Score, 5.3 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
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 public PoC (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 referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
0.6%
EPSS %ILE
45th
KEV
Not listed

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

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation public PoC (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 13, 2026

Last Modified

September 23, 2026

Advisory Details (6)

Auto-updated Sep 13, 2026
Fix referenced — no release confirmed yet.
Web page

S2OPC through 1.7.3 NULL Pointer Dereference in alloc_notification_message_items() | Advisories | VulnCheck

https://www.vulncheck.com/advisories/s2opc-through-1.7.3-null-pointer-dereference-in-alloc-notification-message-items
Web page

Fix potential NULL dereferences (!1862) · Merge requests · Systerel / S2OPC · GitLab

https://gitlab.com/systerel/S2OPC/-/merge_requests/1862
Web page

Systerel / S2OPC · GitLab

https://gitlab.com/systerel/S2OPC
Web page

src/ClientServer/services/b2c/msg_subscription_publish_bs.c · S2OPC_Toolkit_1.7.3 · Systerel / S2OPC · GitLab

https://gitlab.com/systerel/S2OPC/-/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/services/b2c/msg_subscription_publish_bs.c#L106-L147
Web page

Ticket #1815: fix potential NULL dereferences (8848f051) · Commits · Systerel / S2OPC · GitLab

https://gitlab.com/systerel/S2OPC/-/commit/8848f051eed069b107ae7cb16a346d6f6386a8f5
Web page

NULL Pointer Dereference via Status-Variable Clobbering in Notification Message Allocation (#1815) · Issues · Systerel / S2OPC · GitLab

https://gitlab.com/systerel/S2OPC/-/issues/1815

Vendor Advisories for CVE-2026-90782(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 84× 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 88 is merged into the row it repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  2. 2026-10-13 15:32 UTCEG score recompute
  3. 2026-10-13 15:32 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  4. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  5. 2026-10-12 14:46 UTCEG score recompute
  6. 2026-10-11 19:14 UTCEG score recompute
  7. 2026-10-11 16:30 UTCEG score recompute
  8. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  9. 2026-10-11 13:45 UTCEG score recompute
  10. 2026-10-11 09:42 UTCEG score recompute
  11. 2026-10-11 09:41 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  12. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  13. 2026-10-10 05:15 UTCEG score recompute
  14. 2026-10-10 05:15 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  15. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  16. 2026-10-09 02:54 UTCEG score recompute
  17. 2026-10-09 02:53 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  18. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  19. 2026-10-08 00:33 UTCEG score recompute
  20. 2026-10-08 00:32 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  21. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  22. 2026-10-06 22:11 UTCEG score recompute
  23. 2026-10-06 22:11 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  24. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  25. 2026-10-05 19:50 UTCEG score recompute
Show 62 more
  1. 2026-10-05 19:50 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  2. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  3. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  4. 2026-10-04 17:30 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  5. 2026-10-03 15:10 UTCEG score recompute
  6. 2026-10-03 15:10 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  7. 2026-10-02 12:45 UTCEG score recompute
  8. 2026-10-02 12:45 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  9. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  10. 2026-10-01 10:24 UTCEG score recompute
  11. 2026-10-01 10:24 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  12. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  13. 2026-09-30 08:04 UTCEG score recompute
  14. 2026-09-30 08:04 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  15. 2026-09-29 05:43 UTCEG score recompute
  16. 2026-09-29 05:43 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  17. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  18. 2026-09-28 03:23 UTCEG score recompute
  19. 2026-09-28 03:23 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  20. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  21. 2026-09-27 01:02 UTCEG score recompute
  22. 2026-09-27 01:02 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  23. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  24. 2026-09-25 22:41 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  25. 2026-09-24 19:43 UTCEG score recompute
  26. 2026-09-24 19:43 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  27. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  28. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  29. 2026-09-23 17:22 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  30. 2026-09-23 13:22 UTCEG score recompute
  31. 2026-09-23 13:22 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  32. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  33. 2026-09-22 11:01 UTCEG score recompute
  34. 2026-09-22 11:01 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  35. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  36. 2026-09-21 08:41 UTCEG score recompute
  37. 2026-09-21 08:40 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  38. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  39. 2026-09-20 06:17 UTCEG score recompute
  40. 2026-09-20 06:17 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  41. 2026-09-19 03:55 UTCEG score recompute
  42. 2026-09-19 03:55 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  43. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  44. 2026-09-18 01:35 UTCEG score recompute
  45. 2026-09-18 01:35 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  46. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  47. 2026-09-16 23:15 UTCEG score recompute
  48. 2026-09-16 23:15 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  49. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  50. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  51. 2026-09-15 20:54 UTCEG score recompute
  52. 2026-09-15 20:54 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  53. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  54. 2026-09-14 18:34 UTCEG score recompute
  55. 2026-09-14 18:33 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  56. 2026-09-14 17:31 UTCEG score recompute
  57. 2026-09-14 17:31 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  58. 2026-09-14 15:41 UTCEG score recompute
  59. 2026-09-14 15:41 UTCGHSA enrichmentGHSA-wj27-rfm4-9hp4 · GitHub CVSS 5.3
  60. 2026-09-13 13:20 UTCEG score recompute
  61. 2026-09-13 12:35 UTCEG score recomputeFirst assessed: 5.3 MEDIUM
  62. 2026-09-13 12:34 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-90782?
CVE-2026-90782 is a medium-severity vulnerability; its CVE record was published on September 13, 2026. S2OPC through 1.7.3 contains a null pointer dereference in msgsubscriptionpublishbsallocnotificationmessageitems() where a failed allocation for DataChangeNotification is overwritten by a successful allocation for EventNotificationList. Attackers can trigger heap allocation failures on sessions…
When was CVE-2026-90782 made public?
CVE-2026-90782 was made public on August 16, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on September 13, 2026. EchelonGraph's copy of the record carries a last-modified date of September 23, 2026; the record at its source may have been updated since.
Is CVE-2026-90782 actively exploited?
CVE-2026-90782 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-90782?
CVE-2026-90782 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-90782?
A fix for CVE-2026-90782 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2026-90782 are linked in the Vendor Advisories panel on this page.

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