CVE-2025-9242

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-11-12), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 3 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictMitigate nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 91%CVSS: 9.8Exploit: cisa kev · ssvc active · epss top5pct · epss high · public exploitExposed services: Not assessed

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

An Out-of-bounds Write vulnerability in the WatchGuard Fireware OS iked process may allow a remote unauthenticated attacker to execute arbitrary code. This vulnerability affects both the mobile user VPN with IKEv2 and the branch office VPN using IKEv2 when configured with a dynamic gateway peer. If the Firebox was previously configured with the mobile user VPN with IKEv2 or a branch office VPN using IKEv2 to a dynamic gateway peer, and both of those configurations have since been deleted, that Firebox may still be vulnerable if a branch office VPN to a static gateway peer is still configured.

CVSS v3
9.8
EG Score
9.8CRITICALhigh confidence
EG Risk
99
EG Risk 99/100CISA SSVC

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
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
CISA SSVC: Attend at low mission impact; Act at medium or high.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation sooner than your standard update timelines at low mission impact and as soon as possible at medium or high, and watch the vendor's advisory for the fix.
EPSS PROB
91%
EPSS %ILE
99th
KEV
⚠ Exploited

CISA SSVCAttend at low mission impact; Act at medium or high.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation sooner than your standard update timelines at low mission impact and as soon as possible at medium or high, and watch the vendor's advisory for the fix.

Exploitation active (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 17, 2025

Last Modified

August 10, 2026

Advisory Details (4)

Auto-updated Oct 5, 2026
⚠️ Active exploitation confirmed. No fix on record yet. Sources: cisa.
cisa🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-9242
generic

watchTowr-vs-WatchGuard-CVE-2025-9242/watchTowr-vs-WatchGuard-CVE-2025-9242.py at main · watchtowrlabs/watchTowr-vs-WatchGuard-CVE-2025-9242 · GitHub

https://github.com/watchtowrlabs/watchTowr-vs-WatchGuard-CVE-2025-9242/blob/main/watchTowr-vs-WatchGuard-CVE-2025-9242.py
generic

WatchGuard Security Advisories

https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00015
generic

CVE-2025-9242 — WatchGuard Firebox iked Out of Bounds Write Vulnerability

https://psirt.watchguard.com/CVE-2025-9242

Vendor Advisories for CVE-2025-9242(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 43× in last 7d / 201× 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 901 total refreshes for this CVE.

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

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCUnusualGiraffe/Mass-Scanner-CVE-2025-9242
    First seen Jul 23, 2026

    Detection-only asynchronous IPv4 scanner for identifying WatchGuard Fireware version/build profiles associated with CVE-2025-9242 via IKEv2.

    Open source ↗
  • GitHub PoCwatchtowrlabs/watchTowr-vs-WatchGuard-CVE-2025-9242
    First seen Oct 1, 2025
    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2025-9242?
CVE-2025-9242 is a critical vulnerability published on September 17, 2025. An Out-of-bounds Write vulnerability in the WatchGuard Fireware OS iked process may allow a remote unauthenticated attacker to execute arbitrary code. This vulnerability affects both the mobile user VPN with IKEv2 and the branch office VPN using IKEv2 when configured with a dynamic gateway peer. If…
When was CVE-2025-9242 disclosed?
CVE-2025-9242 was first published on September 17, 2025, with the most recent update on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-9242 actively exploited?
Yes. CISA added CVE-2025-9242 to the Known Exploited Vulnerabilities catalog on November 12, 2025, affecting WatchGuard Firebox. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation, and watch the vendor's advisory for the fix.
What is the CVSS score of CVE-2025-9242?
CVE-2025-9242 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2025-9242?
CVE-2025-9242 affects WatchGuard Firebox.
How do I remediate CVE-2025-9242?
No fix for CVE-2025-9242 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2025-9242 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2025-9242

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