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CVE-2024-6143

24
FAUCET Score

CVE-2024-6143 is a buffer overflow vulnerability in the HTTP server of Actiontec WCB6200Q routers, allowing network-adjacent attackers to execute arbitrary code without authentication due to insufficient validation of user-supplied data length. This vulnerability carries a high CVSS score of 8.8, indicating a critical risk with an adjacent attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or KEV entries exist, and community discussion is minimal, the potential for unauthenticated remote code execution makes it a significant concern for affected devices.

Impacted Technologies

VendorProductVersion(s)CPE
1.2l.03.5CPE matchmatch criteria
cpe:2.3:o:actiontec:wcb6200q_firmware:1.2l.03.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.12%
Probability of exploitation in next 30 days
EPSS Percentile
62.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0112 is in the 77th percentile among its peer group of 1,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

zerodayinitiative.com / advisories/ZDI-24-806
Third Party AdvisoryVDB Entry