How severe is CVE-2022-25291?

CVE-2022-25291 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-25291 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-25291?

CVE-2022-25291 primarily affects Watchguard Fireware. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-25291?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-25291 published?

CVE-2022-25291 was published on 2022-02-24 and last updated on 2026-06-17.

CVE-2022-25291

CVE-2022-25291 is a high-severity vulnerability in Watchguard Fireware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Watchguard Fireware
Published: 2022-02-24
Last modified: 2026-06-17

Description

An integer overflow in WatchGuard Firebox and XTM appliances allows an authenticated remote attacker to trigger a heap-based buffer overflow and potentially execute arbitrary code by initiating a firmware update with a malicious upgrade image. This vulnerability impacts Fireware OS before 12.7.2_U2, 12.x before 12.1.3_U8, and 12.2.x through 12.5.x before 12.5.9_U2.

Frequently asked questions

What is CVE-2022-25291?: An integer overflow in WatchGuard Firebox and XTM appliances allows an authenticated remote attacker to trigger a heap-based buffer overflow and potentially execute arbitrary code by initiating a firmware update with a malicious upgrade image. This vulnerability impacts Fireware OS before 12.7.2_U2, 12.x before 12.1.3_U8, and 12.2.x through 12.5.x before 12.5.9_U2.
How severe is CVE-2022-25291?: CVE-2022-25291 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-25291 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-25291?: CVE-2022-25291 primarily affects Watchguard Fireware. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-25291?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-25291 published?: CVE-2022-25291 was published on 2022-02-24 and last updated on 2026-06-17.

References

https://www.watchguard.com/support/release-notes/fireware/12/en-US/EN_ReleaseNotes_Fireware_12_7_2/index.html#Fireware/en-US/resolved_issues.html

Affected products (13)

cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*
cpe:2.3:o:watchguard:fireware:12.1.3:-:*:*:*:*:*:*
cpe:2.3:o:watchguard:fireware:12.1.3:u1:*:*:*:*:*:*
cpe:2.3:o:watchguard:fireware:12.1.3:u2:*:*:*:*:*:*
cpe:2.3:o:watchguard:fireware:12.1.3:u3:*:*:*:*:*:*
cpe:2.3:o:watchguard:fireware:12.1.3:u4:*:*:*:*:*:*
cpe:2.3:o:watchguard:fireware:12.1.3:u5:*:*:*:*:*:*
cpe:2.3:o:watchguard:fireware:12.1.3:u6:*:*:*:*:*:*
cpe:2.3:o:watchguard:fireware:12.1.3:u7:*:*:*:*:*:*
cpe:2.3:o:watchguard:fireware:12.5.9:-:*:*:*:*:*:*
cpe:2.3:o:watchguard:fireware:12.5.9:u1:*:*:*:*:*:*
cpe:2.3:o:watchguard:fireware:12.7.2:-:*:*:*:*:*:*
cpe:2.3:o:watchguard:fireware:12.7.2:u1:*:*:*:*:*:*

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