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Home / Vulnerability Intelligence / CVE-2026-5004

CVE-2026-5004 - Vulnerability Analysis

HighCVSS: 8.8

Last Updated: March 28, 2026

Wavlink WL-WN579X3-C - Buffer Overflow

Published: March 28, 2026Updated: March 28, 2026Remote Exploitable

Overview

Wavlink WL-WN579X3-C 231124 contains a stack-based buffer overflow caused by manipulation of the "UpnpEnabled" argument in /cgi-bin/firewall.cgi UPNP Handler, letting remote attackers execute code remotely, exploit requires crafted request.

Severity & Score

Severity: High
CVSS Score: 8.8
EPSS Score: 0.0%(Probability of exploitation in next 30 days)

Impact

Remote attackers can execute arbitrary code, potentially leading to full system compromise.

Mitigation

Update to the latest version or apply vendor patches when available.

References

Social Media Activity(4 posts)

Offensive Sequence
Offensive Sequence
@offseq
Mar 28, 2026

šŸšØ HIGH severity buffer overflow in Wavlink WL-WN579X3-C (231124): Remote attackers can exploit UPnP Handler to run code. No patch from vendor. Disable UPnP & block remote access immediately. CVE-2026-5004 https://radar.offseq.com/threat/cve-2026-5004-stack-based-buffer-overflow-in-wavli-7ae39014 #OffSeq #Infosec #RouterSecurity #CVE20265004

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TheHackerWire
TheHackerWire
@thehackerwire
Mar 28, 2026

šŸŸ  CVE-2026-5004 - High (8.8) A vulnerability was determined in Wavlink WL-WN579X3-C 231124. This impacts the function sub_4019FC of the file /cgi-bin/firewall.cgi of the component UPNP Handler. Executing a manipulation of the argument UpnpEnabled can lead to stack-based buffe... šŸ”— https://www.thehackerwire.com/vulnerability/CVE-2026-5004/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

View original post
Offensive Sequence
Offensive Sequence
@offseq
Mar 28, 2026

šŸšØ HIGH severity buffer overflow in Wavlink WL-WN579X3-C (231124): Remote attackers can exploit UPnP Handler to run code. No patch from vendor. Disable UPnP & block remote access immediately. CVE-2026-5004 https://radar.offseq.com/threat/cve-2026-5004-stack-based-buffer-overflow-in-wavli-7ae39014 #OffSeq #Infosec #RouterSecurity #CVE20265004

View original post
TheHackerWire
TheHackerWire
@thehackerwire
Mar 28, 2026

šŸŸ  CVE-2026-5004 - High (8.8) A vulnerability was determined in Wavlink WL-WN579X3-C 231124. This impacts the function sub_4019FC of the file /cgi-bin/firewall.cgi of the component UPNP Handler. Executing a manipulation of the argument UpnpEnabled can lead to stack-based buffe... šŸ”— https://www.thehackerwire.com/vulnerability/CVE-2026-5004/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

View original post

Related Resources

Details

CVE ID
CVE-2026-5004
Severity
High
CVSS Score
8.8
Type
buffer_overflow
Status
new
EPSS
0.0%
Social Posts
4

CWE

  • CWE-119

CVSS Metrics

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

EPSS Score

0.0%Probability of exploitation in the next 30 days