CVE-2023-49257 — An authenticated user is able to upload an arbitrary CGI-compatible file using t

An authenticated user is able to upload an arbitrary CGI-compatible file using the certificate upload utility and execute it with the root user privileges.

01What is this vulnerability?

An authenticated user is able to upload an arbitrary CGI-compatible file using the certificate upload utility and execute it with the root user privileges.

02Affected products

Vendor	Product	Versions
Hongdian	H8951	4G-ESP — 0

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

08Timeline

• Published: 2024-01-12T14:24:32.311Z
• Last modified: 2025-06-11T17:01:32.389Z

09References

• cert.pl — https://cert.pl/en/posts/2024/01/CVE-2023-49253/
• cert.pl — https://cert.pl/posts/2024/01/CVE-2023-49253/