Is CVE-2005-4890 being actively exploited?

CVE-2005-4890 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2005-4890?

CVE-2005-4890 has a CVSS 3.1 base score of 7.8 (HIGH).

CVE-2005-4890

HIGH · CVSS 7.8EPSS 0.6%EU EUVD

There is a possible tty hijacking in shadow 4.x before 4.1.5 and sudo 1.x before 1.7.4 via "su - user -c program". The user session can be escaped to the parent session by using the TIOCSTI ioctl to push characters into the input buffer to be read by the next process.

Key facts

CVSS score: 7.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-20
EPSS score: 0.6% (49th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2005-4881)
Published: November 4, 2019
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2005-4881 in the EU Vulnerability Database. Last updated in EUVD on August 8, 2024.

View on the EU Vulnerability Database

Affected products

debian / debian linux
debian / debian linux
debian / debian linux
debian / shadow
redhat / enterprise linux
redhat / enterprise linux
redhat / enterprise linux
sudo project / sudo

Certified products that may be affected

9 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Red Hat Enterprise Linux 5 OpenSSH-Server Cryptographic Module - Red Hat®, Inc. - FIPS 140 1384 - historical
Red Hat Enterprise Linux 5 OpenSSH Client Cryptographic Module - Red Hat®, Inc. - FIPS 140 1385 - historical
Red Hat Enterprise Linux 5 OpenSwan Cryptographic Module - Red Hat®, Inc. - FIPS 140 1386 - historical
Red Hat Enterprise Linux 5 Kernel Crypto API Cryptographic Module - Red Hat®, Inc. - FIPS 140 1387 - historical
Red Hat Enterprise Linux 5 OpenSSL Cryptographic Module - Red Hat®, Inc. - FIPS 140 1320 - historical

See all 9 in the Security Certifications Explorer.

References

http://www.openwall.com/lists/oss-security/2012/11/06/8(Mailing List, Third Party Advisory)
http://www.openwall.com/lists/oss-security/2013/05/20/3(Mailing List, Third Party Advisory)
http://www.openwall.com/lists/oss-security/2013/11/28/10(Mailing List, Third Party Advisory)
http://www.openwall.com/lists/oss-security/2013/11/29/5(Mailing List, Third Party Advisory)
http://www.openwall.com/lists/oss-security/2014/10/20/9(Mailing List, Third Party Advisory)
http://www.openwall.com/lists/oss-security/2014/10/21/1(Mailing List, Third Party Advisory)
http://www.openwall.com/lists/oss-security/2014/12/15/5(Mailing List, Third Party Advisory)
http://www.openwall.com/lists/oss-security/2016/02/25/6(Exploit, Mailing List, Third Party Advisory)
https://access.redhat.com/security/cve/cve-2005-4890(Third Party Advisory)
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2005-4890(Issue Tracking, Third Party Advisory)
https://security-tracker.debian.org/tracker/CVE-2005-4890(Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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