CVE-2025-40833

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-12. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

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

The affected devices contain a null pointer dereference vulnerability while processing specially crafted IPv4 requests. This could allow an attacker to cause denial of service condition. A manual restart is required to recover the system.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
24.5%
KEV
Not listed

Published

May 12, 2026

Last Modified

July 14, 2026

Advisory Details (1)

Auto-updated May 12, 2026
No patch confirmed yet.
generic

SSA-392349

https://cert-portal.siemens.com/productcert/html/ssa-392349.html

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 52× 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 141 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2025-40833?
CVE-2025-40833 is a high vulnerability published on May 12, 2026. The affected devices contain a null pointer dereference vulnerability while processing specially crafted IPv4 requests. This could allow an attacker to cause denial of service condition. A manual restart is required to recover the system.
When was CVE-2025-40833 disclosed?
CVE-2025-40833 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-40833 actively exploited?
CVE-2025-40833 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 24.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-40833?
CVE-2025-40833 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2025-40833?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-40833, 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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