Review reviewCritical

CVE-2024-51139

vigor2620 firmware, vigor2620

Buffer Overflow vulnerability in Vigor2620/LTE200 3.9.8.9 and earlier and Vigor2860/2925 3.9.8 and earlier and Vigor2862/2926 3.9.9.5 and earlier and Vigor2133/2762/2832 3.9.9 and earlier and Vigor165/166 4.2.7 and earlier and Vigor2135/2765/2766 4.4.5.1 and earlier and Vigor2865/2866/2927 4.4.5.3 and earlier and Vigor2962/3910 4.3.2.8/4.4.3.1 and earlier and Vigor3912 4.3.6.1 and earlier allows a remote attacker to execute arbitrary code via the CGI parser's handling of the "Content-Length" header of HTTP POST requests.

CVSS: 9.8
EPSS: 0.98%
CISA KEV: Not listed
Published: 2025.02.28

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.98%

Technical severityCVSS 9.8

Vulnerability overview

Affected product and versions

Product: vigor2620 firmware, vigor2620
Affected versions: < 3.9.9.1, < 3.9.8.3, < 3.9.9.8, < 3.9.9.2, < 4.4.5.5, < 4.4.5.8, < 4.3.2.9, >= 4.4.3 < 4.4.3.2, < 4.4.3.2, < 4.4.5, < 3.9.8.5
Fixed versions: 3.9.9.1, 3.9.8.3, 3.9.9.8, 3.9.9.2, 4.4.5.5, 4.4.5.8, 4.3.2.9, 4.4.3.2, 4.4.5, 3.9.8.5

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that vigor2620 firmware, vigor2620 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-120