9.2

CVE-2026-13368: WatchGuard Firebox Race Condition and Use-After-Free in Mobile VPN with IKEv2 LDAP Authentication

Analyzed
Published 02-07-2026Last modified 27-08-2026

Vulnerability summary

CVE-2026-13368 is a critical (CVSS 9.2) Use After Free vulnerability in watchguard fireware. EPSS estimates a 0.94% chance of exploitation in the next 30 days, higher than 60.4% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.2/10
010
Critical · v4.0 (CVE.org)
EPSS score
0.94%
0%100%
Low · -0.08 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 02-07-2026
    PublishedVulnerability first disclosed.
  2. 27-08-2026
    Last modifiedVulnerability information updated.

Description

WatchGuard Fireware OS contains a race condition leading to a use-after-free vulnerability in LDAP authentication for the Mobile User VPN with IKEv2. A remote unauthenticated attacker could exploit this vulnerability to execute arbitrary code in the context of the iked process on Fireboxes that have a Mobile VPN with IKEv2 configured to use an external LDAP authentication server.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.94%

Chance of exploitation in the next 30 days

Percentile

60%

Versus all other CVEs

30-day change

Decrease -0.08 pp

From 1.01% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Watchguard2 products
  • fireware≥ 2025.1, < 2026.2.1 | ≥ 12.5, < 12.5.19 | ≥ 11.0.0, < 11.12.4 | 11.12.4 | 11.12.4:u1 | ≥ 12.0, < 12.12.1
  • fireware os≥ 2025.1, < 2026.2.1 | ≥ 12.0, < 12.11.9 | ≥ 12.0, < 12.5.19

1 vendor · 2 products

References

2 links