CVE-2026-54429

HIGHPre-NVD 7.47.4—
EchelonGraph scoreMEDIUM confidence

Score 7.4 from GitHub Security Advisory published 2026-07-14. a secondary CVSS source baseline 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.4Exploit: None knownExposed: 0

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

A vulnerability has been identified in SIMATIC S7-PLCSIM Advanced (All versions). Affected devices do not properly handle high-volume multicast network traffic, which can exhaust available memory resources in the affected application. This could allow an unauthenticated attacker on the local network segment to cause a denial-of-service condition of the affected application. The affected application becomes inaccessible and requires a manual restart; no project data is lost. Successful exploitation requires a specific project configuration to be already active on the targeted instance.

CVSS v3
7.4
EG Score
7.4(medium)
EG Risk
33(Track)
EG Risk 33/100SSVC: 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
Severity74% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

July 14, 2026

Last Modified

July 15, 2026

Advisory Details (1)

Auto-updated Jul 14, 2026
No patch confirmed yet.
generic

SSA-828211

https://cert-portal.siemens.com/productcert/html/ssa-828211.html

Vendor Advisories for CVE-2026-54429(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 19× in last 7d / 105× 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 148 total refreshes for this CVE.

  1. 2026-08-30 05:25 UTCEG score recompute
  2. 2026-08-30 05:25 UTCGHSA enrichment
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-28 21:41 UTCEPSS rescore
  5. 2026-08-27 21:34 UTCEG score recompute
  6. 2026-08-27 21:34 UTCGHSA enrichment
  7. 2026-08-27 14:25 UTCEPSS rescore
  8. 2026-08-27 03:46 UTCGHSA enrichment
  9. 2026-08-26 15:01 UTCEG score recompute
  10. 2026-08-26 15:01 UTCGHSA enrichment
  11. 2026-08-26 14:46 UTCEPSS rescore
  12. 2026-08-26 01:53 UTCEG score recompute
  13. 2026-08-26 01:53 UTCGHSA enrichment
  14. 2026-08-25 13:49 UTCEPSS rescore
  15. 2026-08-25 10:54 UTCGHSA enrichment
  16. 2026-08-24 22:00 UTCEG score recompute
  17. 2026-08-24 22:00 UTCGHSA enrichment
  18. 2026-08-24 09:16 UTCGHSA enrichment
  19. 2026-08-23 19:36 UTCGHSA enrichment
  20. 2026-08-23 06:52 UTCGHSA enrichment
  21. 2026-08-22 18:09 UTCGHSA enrichment
  22. 2026-08-22 05:24 UTCEG score recompute
  23. 2026-08-22 05:24 UTCGHSA enrichment
  24. 2026-08-21 23:49 UTCEPSS rescore
  25. 2026-08-21 16:40 UTCGHSA enrichment
Show 75 more
  1. 2026-08-21 03:35 UTCEG score recompute
  2. 2026-08-21 03:35 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 14:40 UTCGHSA enrichment
  5. 2026-08-20 01:06 UTCEG score recompute
  6. 2026-08-20 01:06 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 12:16 UTCGHSA enrichment
  9. 2026-08-18 23:21 UTCEG score recompute
  10. 2026-08-18 23:21 UTCGHSA enrichment
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-18 10:37 UTCGHSA enrichment
  13. 2026-08-17 21:53 UTCEG score recompute
  14. 2026-08-17 21:53 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 08:14 UTCGHSA enrichment
  17. 2026-08-16 19:31 UTCEG score recompute
  18. 2026-08-16 19:31 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 06:12 UTCEG score recompute
  21. 2026-08-16 06:12 UTCGHSA enrichment
  22. 2026-08-16 02:14 UTCEPSS rescore
  23. 2026-08-15 17:28 UTCGHSA enrichment
  24. 2026-08-15 04:44 UTCEG score recompute
  25. 2026-08-15 04:44 UTCGHSA enrichment
  26. 2026-08-15 01:30 UTCEPSS rescore
  27. 2026-08-14 16:00 UTCGHSA enrichment
  28. 2026-08-14 03:17 UTCEG score recompute
  29. 2026-08-14 03:17 UTCGHSA enrichment
  30. 2026-08-13 22:00 UTCEPSS rescore
  31. 2026-08-13 14:33 UTCEG score recompute
  32. 2026-08-13 14:33 UTCGHSA enrichment
  33. 2026-08-13 01:39 UTCEG score recompute
  34. 2026-08-13 01:39 UTCGHSA enrichment
  35. 2026-08-12 13:51 UTCEPSS rescore
  36. 2026-08-12 12:56 UTCGHSA enrichment
  37. 2026-08-12 00:11 UTCEG score recompute
  38. 2026-08-12 00:11 UTCGHSA enrichment
  39. 2026-08-11 11:27 UTCEG score recompute
  40. 2026-08-11 11:27 UTCGHSA enrichment
  41. 2026-08-11 00:00 UTCEPSS rescore
  42. 2026-08-10 22:43 UTCGHSA enrichment
  43. 2026-08-10 09:59 UTCGHSA enrichment
  44. 2026-08-09 21:15 UTCEG score recompute
  45. 2026-08-09 21:15 UTCGHSA enrichment
  46. 2026-08-09 13:46 UTCEPSS rescore
  47. 2026-08-09 08:32 UTCGHSA enrichment
  48. 2026-08-08 19:48 UTCEG score recompute
  49. 2026-08-08 19:48 UTCGHSA enrichment
  50. 2026-08-08 16:37 UTCEPSS rescore
  51. 2026-08-08 07:04 UTCGHSA enrichment
  52. 2026-08-07 18:21 UTCEG score recompute
  53. 2026-08-07 18:21 UTCGHSA enrichment
  54. 2026-08-07 05:37 UTCGHSA enrichment
  55. 2026-08-06 16:53 UTCEG score recompute
  56. 2026-08-06 16:53 UTCGHSA enrichment
  57. 2026-08-06 13:47 UTCEPSS rescore
  58. 2026-08-06 04:09 UTCEG score recompute
  59. 2026-08-06 04:09 UTCGHSA enrichment
  60. 2026-08-05 19:17 UTCEPSS rescore
  61. 2026-08-05 15:25 UTCGHSA enrichment
  62. 2026-08-05 02:21 UTCEG score recompute
  63. 2026-08-05 02:21 UTCGHSA enrichment
  64. 2026-08-04 15:10 UTCEPSS rescore
  65. 2026-08-04 13:36 UTCEG score recompute
  66. 2026-08-04 13:36 UTCGHSA enrichment
  67. 2026-08-04 10:39 UTCEPSS rescore
  68. 2026-08-04 00:51 UTCGHSA enrichment
  69. 2026-08-03 12:07 UTCEG score recompute
  70. 2026-08-03 12:07 UTCGHSA enrichment
  71. 2026-08-03 10:36 UTCEPSS rescore
  72. 2026-08-02 22:53 UTCGHSA enrichment
  73. 2026-08-02 10:09 UTCEG score recompute
  74. 2026-08-02 10:09 UTCGHSA enrichment
  75. 2026-08-02 02:27 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-54429?
CVE-2026-54429 is a high vulnerability published on July 14, 2026. A vulnerability has been identified in SIMATIC S7-PLCSIM Advanced (All versions). Affected devices do not properly handle high-volume multicast network traffic, which can exhaust available memory resources in the affected application. This could allow an unauthenticated attacker on the local…
When was CVE-2026-54429 disclosed?
CVE-2026-54429 was first published in the National Vulnerability Database on July 14, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54429 actively exploited?
CVE-2026-54429 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 81.9% of all scored CVEs.
What is the CVSS score of CVE-2026-54429?
CVE-2026-54429 has a CVSS v3 base score of 7.4 (NVD).
How do I remediate CVE-2026-54429?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54429, 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-2026-54429

Explore →

Is Your Infrastructure Affected by CVE-2026-54429?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs