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CVE-2025-40843— Buffer overflow in CodeChecker log command

Quick assessment

Affected
Ericsson CodeChecker
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CodeChecker是Ericsson开源的一个 Clang Static Analyzer 和 Clang Tidy 的分析工具、缺陷数据库和查看器扩展。 CodeChecker 6.26.1及之前版本存在安全漏洞，该漏洞源于内部ldlogger库存在缓冲区溢出。

CVSS 5.9 · Medium EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-40843

Vulnerability Information
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Vulnerability Title
Buffer overflow in CodeChecker log command
Source: CVE Program / CVE List V5
Vulnerability Description
CodeChecker is an analyzer tooling, defect database and viewer extension for the Clang Static Analyzer and Clang Tidy. CodeChecker versions up to 6.26.1 contain a buffer overflow vulnerability in the internal ldlogger library, which is executed by the CodeChecker log command. This issue affects CodeChecker: through 6.26.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
CodeChecker 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CodeChecker是Ericsson开源的一个 Clang Static Analyzer 和 Clang Tidy 的分析工具、缺陷数据库和查看器扩展。 CodeChecker 6.26.1及之前版本存在安全漏洞，该漏洞源于内部ldlogger库存在缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Ericsson CodeChecker 0 ~ 6.26.1 -

II. Public POCs for CVE-2025-40843

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III. Intelligence Information for CVE-2025-40843

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Vendor Advisories for CVE-2025-40843 (1)

IV. Related Vulnerabilities

Same product: CodeChecker
Same vendor: Ericsson
Same weakness: CWE-121

V. Comments for CVE-2025-40843

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