CVE-2023-27882 — A heap-based buffer overflow vulnerability exists in the HTTP Server form bounda

A heap-based buffer overflow vulnerability exists in the HTTP Server form boundary functionality of Weston Embedded uC-HTTP v3.01.01. A specially crafted network packet can lead to code execution. An attacker can send a malicious packet to trigger this vulnerability.

01What is this vulnerability?

A heap-based buffer overflow vulnerability exists in the HTTP Server form boundary functionality of Weston Embedded uC-HTTP v3.01.01. A specially crafted network packet can lead to code execution. An attacker can send a malicious packet to trigger this vulnerability.

02Affected products

Vendor	Product	Versions
Silicon Labs	Gecko Platform	4.3.1.0
Weston Embedded	Cesium NET	3.07.01
Weston Embedded	uC	HTTP — v3.01.01

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: 2023-11-14T09:14:52.532Z
• Last modified: 2025-11-04T19:15:42.678Z

09References

• talosintelligence.com — https://talosintelligence.com/vulnerability_reports/TALOS-2023-1733