CVE-2023-27882

Name: CVE-2023-27882
Creator: NVD / NIST
Published: 2023-11-14T10:15:27.113+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.78%

Last modified Jun 17, 2026

CVE-2023-27882 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 1.78% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.78%

75.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Silabs	Gecko Software Development Kit	4.3.1
Weston-Embedded	Cesium Net	3.07.01
Weston-Embedded	Uc-Http	3.01.01

References

https://talosintelligence.com/vulnerability_reports/TALOS-2023-1733Exploit, Technical Description, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1733Exploit, Technical Description, Third Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1733

Timeline

Published: Nov 14, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-27882?

How severe is CVE-2023-27882?

CVE-2023-27882 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.78% probability of exploitation in the next 30 days.

How do I fix CVE-2023-27882?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-27882?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST