EUVD-2026-65616
GHSA-42vv-cfp2-9qc8
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local attack vector and low privileges required because attacker needs existing shell access and filesystem write ability; no user interaction required as TRAMP processes filenames automatically.
Primary rating from Vendor (redhat).
CVSS VectorVendor: redhat
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Arbitrary code execution in Emacs TRAMP affects Red Hat Enterprise Linux 6 through 10 via a local command injection flaw in the TRAMP remote file access subsystem. TRAMP concatenates user-influenced login arguments - including filenames - without sanitization before passing them to a local shell, enabling a low-privileged local attacker to inject shell commands that execute with the victim process's privileges. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the target system to have Emacs installed with TRAMP active (the default Emacs configuration on RHEL) and a user on the system who is running Emacs and processes files via the TRAMP subsystem. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 HIGH rating with vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H accurately reflects the local, low-complexity nature of this flaw. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A low-privileged local attacker on a shared RHEL server creates a filename containing shell metacharacters (e.g., a semicolon or backtick sequence encoding a reverse shell payload) in a directory accessible to a target user who actively uses Emacs with TRAMP. When the victim user's Emacs session processes or accesses that filename via TRAMP - for example, by navigating a directory listing - the crafted filename is concatenated unsanitized into a login argument passed to the local shell, executing the attacker's payload with the victim's privileges. … |
| Remediation | No specific patched Emacs package version is confirmed in the available data; organizations must monitor the Red Hat Security Advisory at https://access.redhat.com/security/cve/CVE-2026-79992 and apply updates via standard RHEL package management (dnf update emacs or yum update emacs) once a fix is released. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all RHEL 6-10 systems running Emacs, prioritizing multi-user systems with active TRAMP usage for remote file access. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Red Hat Enterprise Linux 10
View allHeap corruption via double-free in 389-ds-base's LDAP control parsing allows an unauthenticated remote attacker to crash
Remote code execution in Cockpit's web interface allows unauthenticated attackers to execute arbitrary commands on the h
Remote code execution in Samba's printing subsystem allows remote attackers to inject arbitrary shell commands via craft
Remote code execution and privilege escalation in HPLIP (HP Linux Imaging and Printing) affects the hpcups print filter
HTTP request smuggling in Undertow (the embedded web server underpinning JBoss EAP, Red Hat Data Grid, and Apache Camel
HTTP request smuggling in Red Hat Undertow allows remote unauthenticated attackers to bypass front-end security controls
Out-of-bounds read in the GnuTLS DTLS handshake reassembly logic lets remote unauthenticated attackers trigger an intege
HTTP request smuggling in Undertow allows remote unauthenticated attackers to send `\r\r\r` as a header block terminator
Local privilege escalation in Performance Co-Pilot (PCP) on Red Hat Enterprise Linux 6 through 10 and OpenShift Containe
Denial of service in Red Hat / 389 Directory Server (389-ds-base, versions since ~1.3.2/2013) allows an authenticated LD
Local-to-domain-wide root privilege escalation in SSSD's LDAP sudo provider allows an authenticated LDAP directory user
Heap buffer overflow in GStreamer's librfb (RFB/VNC client) allows a malicious VNC server to corrupt heap memory on a co
Same weakness CWE-78 – OS Command Injection
View allSame technique Command Injection
View allShare
External POC / Exploit Code
Leaving vuln.today