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CVE-2026-79992— Emacs: local shell command injection through the user field in emacs tramp

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
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.

发现 Emacs TRAMP 存在一处漏洞。本地攻击者可通过处理恶意构造的文件名利用此漏洞。该问题源于 TRAMP 在拼接登录参数时未进行适当 sanitization（清理/过滤），随后将这些参数传递给本地 shell 执行。成功利用此漏洞可能导致任意代码执行。

CVSS 7.8 · High

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 5

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 6 any affected
Red Hat Red Hat Enterprise Linux 7 any affected
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 any affected
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I. Basic Information for CVE-2026-79992

Vulnerability Information
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Vulnerability Title
Emacs: local shell command injection through the user field in emacs tramp
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in Emacs TRAMP. A local attacker could exploit this vulnerability by processing maliciously crafted filenames. This occurs because TRAMP concatenates login arguments without proper sanitization, which are then passed to a local shell. Successful exploitation could lead to arbitrary code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-79992

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III. Intelligence Information for CVE-2026-79992

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Vendor Advisories for CVE-2026-79992 (1)

Other References for CVE-2026-79992 (1)

Same Patch Batch · Red Hat · 2026-08-25 · 10 CVEs total

CVE-2026-79655 7.8 HIGH Sos: sos: path traversal in sos clean tar extraction via unvalidated symlink/hardlink targ
CVE-2026-80186 7.6 HIGH Bluez: stack overflow in name2utf8 causes dos and potential code execution
CVE-2026-78701 6.5 MEDIUM 389-ds-base: 389-ds-base: cve-2026-11610 incomplete fix may introduce a connection-stall d
CVE-2026-78322 6.5 MEDIUM File-roller: file-roller: stack buffer overflow in parse_progress_line for 7z and rar hand
CVE-2026-79717 6.4 MEDIUM Galaxy_ng: galaxy_ng: blind ssrf via namespace avatar_url with no private-address restrict
CVE-2026-79652 5.9 MEDIUM Keycloak-services: keycloak-services: jwt bearer authorization grant does not enforce cons
CVE-2026-80185 5.7 MEDIUM Bluez: sdp-xml: bluez 5.86: unprivileged-local and adjacent-le-peer leads to arbitrary cod
CVE-2026-77680 5.3 MEDIUM Libsoup3: libsoup: quadratic cpu denial of service in http range coalescing after cve-2025
CVE-2026-80101 4.4 MEDIUM Gimp: multiple heap out-of-bounds reads in xwd loader from unrelated width and bytes-per-l

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-78

V. Comments for CVE-2026-79992

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