CVE-2026-19314

HIGHPre-NVD 8.78.7
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (23rd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 3 sources updated this week
8.7EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 8.7Exploit: None knownExposed services: Not assessed

Fireware OS 2026.3.1, Fireware OS 2026.2.2, Fireware OS 12.12.2, Fireware OS 12.5.20 (from the CVE record's solution, WatchGuard Technologies, Inc.) — apply it.

An integer underflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.

CVSS v3
8.7
EG Score
8.7HIGHmedium confidence
EG Risk
54
EG Risk 54/100

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)
Severity87% × 45%
The EG Score, 8.7 of 10.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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: Fireware OS 2026.3.1, Fireware OS 2026.2.2, Fireware OS 12.12.2, Fireware OS 12.5.20 (from the CVE record's solution, WatchGuard Technologies, Inc.). Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.3%
EPSS %ILE
23rd
KEV
Not listed

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

Fireware OS 2026.3.1, Fireware OS 2026.2.2, Fireware OS 12.12.2, Fireware OS 12.5.20 (from the CVE record's solution, WatchGuard Technologies, Inc.). Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

August 27, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Aug 28, 2026
Fix named in the CVE record's solution (WatchGuard Technologies, Inc.).
Web page

CVE-2026-19314 — Fireware OS Integer Underflow in iked Allows Unauthenticated Denial of Service (DoS)

https://psirt.watchguard.com/CVE-2026-19314

Vendor Advisories for CVE-2026-19314(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 / 92× 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.

Showing the most recent 100 of 161 refreshes on record for this CVE.

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. None are among the latest 100 rows. The 61 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  2. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  3. 2026-10-12 16:26 UTCEG score recompute
  4. 2026-10-11 20:06 UTCEG score recompute
  5. 2026-10-11 17:19 UTCEG score recompute
  6. 2026-10-11 14:51 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  8. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  9. 2026-10-10 15:08 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  10. 2026-10-10 01:43 UTCEG score recompute
  11. 2026-10-10 01:43 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  12. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  13. 2026-10-09 02:51 UTCEG score recompute
  14. 2026-10-09 02:51 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  15. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  16. 2026-10-08 01:10 UTCEG score recompute
  17. 2026-10-08 01:10 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  18. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  19. 2026-10-07 02:44 UTCEG score recompute
  20. 2026-10-07 02:44 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  21. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  22. 2026-10-06 13:47 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  23. 2026-10-06 00:50 UTCEG score recompute
  24. 2026-10-06 00:50 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  25. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
Show 75 more
  1. 2026-10-05 08:35 UTCEG score recompute
  2. 2026-10-05 08:35 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  3. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  4. 2026-10-04 19:38 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  5. 2026-10-04 04:01 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  6. 2026-10-03 14:56 UTCEG score recompute
  7. 2026-10-03 14:56 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  8. 2026-10-03 01:48 UTCEG score recompute
  9. 2026-10-03 01:48 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  10. 2026-10-02 12:50 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  11. 2026-10-01 22:31 UTCEG score recompute
  12. 2026-10-01 22:31 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  13. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  14. 2026-10-01 08:49 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  15. 2026-09-30 19:53 UTCEG score recompute
  16. 2026-09-30 19:53 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  17. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  18. 2026-09-30 04:20 UTCEG score recompute
  19. 2026-09-30 04:20 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  20. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  21. 2026-09-29 12:12 UTCEG score recompute
  22. 2026-09-29 12:12 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  23. 2026-09-28 21:12 UTCEG score recompute
  24. 2026-09-28 21:12 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  25. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  26. 2026-09-28 07:43 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  27. 2026-09-27 18:46 UTCEG score recompute
  28. 2026-09-27 18:46 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  29. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  30. 2026-09-27 05:48 UTCEG score recompute
  31. 2026-09-27 05:48 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  32. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  33. 2026-09-26 15:47 UTCEG score recompute
  34. 2026-09-26 15:46 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  35. 2026-09-25 11:43 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  36. 2026-09-24 22:09 UTCEG score recompute
  37. 2026-09-24 22:09 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  38. 2026-09-24 09:12 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  39. 2026-09-23 20:15 UTCEG score recompute
  40. 2026-09-23 20:15 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  41. 2026-09-23 07:18 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  42. 2026-09-22 18:21 UTCEG score recompute
  43. 2026-09-22 18:21 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  44. 2026-09-22 04:30 UTCEG score recompute
  45. 2026-09-22 04:30 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  46. 2026-09-21 15:32 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  47. 2026-09-21 02:36 UTCEG score recompute
  48. 2026-09-21 02:35 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  49. 2026-09-20 13:38 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  50. 2026-09-20 00:42 UTCEG score recompute
  51. 2026-09-20 00:42 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  52. 2026-09-19 11:44 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  53. 2026-09-18 22:47 UTCEG score recompute
  54. 2026-09-18 22:47 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  55. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  56. 2026-09-18 09:50 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  57. 2026-09-17 20:53 UTCEG score recompute
  58. 2026-09-17 20:53 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  59. 2026-09-17 03:27 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  60. 2026-09-16 14:30 UTCEG score recompute
  61. 2026-09-16 14:30 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  62. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  63. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  64. 2026-09-16 01:33 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  65. 2026-09-15 12:35 UTCEG score recompute
  66. 2026-09-15 12:35 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  67. 2026-09-14 23:38 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  68. 2026-09-14 10:23 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  69. 2026-09-13 21:26 UTCEG score recompute
  70. 2026-09-13 21:26 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  71. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  72. 2026-09-13 08:29 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  73. 2026-09-12 19:32 UTCEG score recompute
  74. 2026-09-12 19:32 UTCGHSA enrichmentGHSA-p5wc-v6pv-pg65 · GitHub severity HIGH
  75. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.3% · 25th percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19314?
CVE-2026-19314 is a high-severity vulnerability; its CVE record was published on August 27, 2026. An integer underflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
When was CVE-2026-19314 made public?
CVE-2026-19314 was made public on August 27, 2026: that is the date its CVE record's CNA, WatchGuard Technologies, Inc., gives for when the vulnerability was made public. The CVE record itself was published on August 27, 2026. EchelonGraph's copy of the record carries a last-modified date of September 3, 2026; the record at its source may have been updated since.
Is CVE-2026-19314 actively exploited?
CVE-2026-19314 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (23rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19314?
CVE-2026-19314 has a CVSS base score of 8.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-19314?
The CVE record's solution for CVE-2026-19314, written by its CNA WatchGuard Technologies, Inc., names the fix: "Fireware OS 2026.3.1, Fireware OS 2026.2.2, Fireware OS 12.12.2, Fireware OS 12.5.20". The vendor advisories EchelonGraph has for CVE-2026-19314 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-19314

Explore →

Is Your Infrastructure Affected by CVE-2026-19314?

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

Book a Demo →Browse All CVEs