EUVD-2026-12154Severity by source
AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
Lifecycle Timeline
3DescriptionCVE.org
telnet in GNU inetutils through 2.7 allows servers to read arbitrary environment variables from clients via NEW_ENVIRON SEND USERVAR.
Analysis
telnet in GNU inetutils through 2.7 allows servers to read arbitrary environment variables from clients via NEW_ENVIRON SEND USERVAR.
Technical ContextAI
This vulnerability is classified as Incorrect Resource Transfer Between Spheres (CWE-669).
RemediationAI
Monitor vendor advisories for patches. Apply mitigations such as network segmentation, access restrictions, and monitoring.
GNU Inetutils telnetd through version 2.7 contains a critical authentication bypass that allows remote attackers to gain
GNU inetutils before 2.5 may allow privilege escalation because of unchecked return values of set*id() family functions
telnetd in GNU Inetutils through 2.3, MIT krb5-appl through 1.0.3, and derivative works has a NULL pointer dereference v
Inetutils versions up to 2.7 is affected by inclusion of functionality from untrusted control sphere (CVSS 7.4).
OOB write in GNU inetutils telnetd through 2.7 via LINEMODE SLC handler.
The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they
Same technique Information Disclosure
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External POC / Exploit Code
Leaving vuln.today