CVE-2024-51139

CRITICAL
2025-02-27 [email protected]
9.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 28, 2026 - 18:28 vuln.today
CVE Published
Feb 27, 2025 - 21:15 nvd
CRITICAL 9.8

Tags

Buffer Overflow RCE Vigor2620 Firmware Vigorlte200 Firmware Vigor2860 Firmware Vigor2925 Firmware Vigor2862 Firmware Vigor2926 Firmware Vigor2133 Firmware Vigor2762 Firmware Vigor2832 Firmware Vigor2135 Firmware Vigor2765 Firmware Vigor2766 Firmware Vigor2763 Firmware Vigor2865 Firmware Vigor2866 Firmware Vigor2927 Firmware Vigor2962 Firmware Vigor3910 Firmware Vigor3912 Firmware Vigor2915 Firmware Vigor1000B Firmware Vigor2952 Firmware Vigor3220 Firmware

Description

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.

Analysis

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. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical Context

This vulnerability is classified as Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. 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. Affected products include: Draytek Vigor2620 Firmware, Draytek Vigorlte200 Firmware, Draytek Vigor2860 Firmware, Draytek Vigor2925 Firmware, Draytek Vigor2862 Firmware.

Affected Products

Draytek Vigor2620 Firmware, Draytek Vigorlte200 Firmware, Draytek Vigor2860 Firmware, Draytek Vigor2925 Firmware, Draytek Vigor2862 Firmware.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.

Priority Score

50
Low Medium High Critical
KEV: 0
EPSS: +0.7
CVSS: +49
POC: 0

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CVE-2024-51139 vulnerability details – vuln.today
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