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CVE-2026-6368— wordexp with WRDE_APPEND can return or use invalid memory

Quick assessment

Affected
glibc glibc
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.

GNU glibc是美国GNU基金会开源的一个 GNU 计划所实现的 C 标准库。 GNU glibc 2.0版本至2.43版本存在资源管理错误漏洞，该漏洞源于使用WRDE_APPEND调用wordexp时返回无效内存，可能导致后续调用wordfree时进程中止。

CVSS 2.1 · Low EPSS 0.11% · P1

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
glibc glibc 1.93-260< 2.43 affected
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I. Basic Information for CVE-2026-6368

Vulnerability Information
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Vulnerability Title
wordexp with WRDE_APPEND can return or use invalid memory
Source: CVE Program / CVE List V5
Vulnerability Description
Calling wordexp with WRDE_APPEND in the GNU C Library version 2.0 to version 2.43 can cause the interface to return invalid memory in the we_wordv member, which on subsequent calls to wordfree may abort the process.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/S:P/AU:Y/U:Green
Source: CVE Program / CVE List V5
Vulnerability Type
对未经初始化资源的使用
Source: CVE Program / CVE List V5
Vulnerability Title
GNU glibc 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU glibc是美国GNU基金会开源的一个 GNU 计划所实现的 C 标准库。 GNU glibc 2.0版本至2.43版本存在资源管理错误漏洞，该漏洞源于使用WRDE_APPEND调用wordexp时返回无效内存，可能导致后续调用wordfree时进程中止。
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
glibc glibc 1.93-260 ~ 2.43 -

II. Public POCs for CVE-2026-6368

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III. Intelligence Information for CVE-2026-6368

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Vendor Advisories for CVE-2026-6368 (1)

Other References for CVE-2026-6368 (1)

IV. Related Vulnerabilities

Same product: glibc
Same weakness: CWE-908

V. Comments for CVE-2026-6368

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