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cve recordhighexploited in the wild3 of 3 cataloguesransomwareexploit reported

CVE-2025-9242

WatchGuard · Firebox · WatchGuard Firebox Out-of-Bounds Write Vulnerability

· Added to CISA KEV
CVSS—
Severityhigh
Weakness—
Exploited3 KEV sources
Ransomware useUnknown
Federal fix dueDec 3, 2025
patch window

Called exploited 34 days after disclosure.

Measured from the CVE publication date to the earliest of 3 KEV catalogues that list it.

The life of this vulnerability

  1. CVE published
  2. First KEV listing34d
  3. Last KEV listing22d
  4. Last sighting6mo

Gaps are compressed to equal steps. The elapsed time is printed under each.

Which catalogues call it exploited

Sources3 of 3
Listings differ by22 d
Strongest claimconfirmed

3 catalogues list it. CIRCL aggregates the others and is shown but not counted.

Public exploitation evidence

6 public reports collected from VulnCheck and CIRCL, first on Oct 21, 2025. Each links to its original source. We have not verified them.

Description

WatchGuard Firebox contains an out-of-bounds write vulnerability in the OS iked process that may allow a remote unauthenticated attacker to execute arbitrary code.

Required action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

References

← Back to the CVE Tracker

Our coverage of CVE-2025-9242

CVE-2025-14733critical

CISA: WatchGuard RCE flaw now exploited in ransomware attacks

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has confirmed that a critical remote code execution (RCE) vulnerability in WatchGuard Firebox firewalls, tracked as CVE-2025-14733, is now being exploited by ransomware groups. CISA added this flaw to its Known Exploited Vulnerabilities (KEV) catalog in December, at which point it was already being actively exploited.