CVE-2023-37929 — The buffer overflow vulnerability in the CGI program of the VMG3625-T50B firmwar

The buffer overflow vulnerability in the CGI program of the VMG3625-T50B firmware version V5.50(ABPM.8)C0 could allow an authenticated remote attacker to cause denial of service (DoS) conditions by sending a crafted HTTP request to a vulnerable device.

01What is this vulnerability?

The buffer overflow vulnerability in the CGI program of the VMG3625-T50B firmware version V5.50(ABPM.8)C0 could allow an authenticated remote attacker to cause denial of service (DoS) conditions by sending a crafted HTTP request to a vulnerable device.

02Affected products

Vendor	Product	Versions
Zyxel	V5.50(ABPM.8)C0 firmware	V5.50(ABPM.8)C0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2024-05-21T01:23:53.073Z
• Last modified: 2024-08-02T17:23:27.734Z

09References

• www.zyxel.com — https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advis…