CVE-2005-4890

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-04-21. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

November 4, 2019

Last Modified

November 21, 2024

Advisory Details (10)

Auto-updated Jul 24, 2026
Patch available. Sources: redhat.
redhat Patch Available

710208 – (CVE-2005-4890) CVE-2005-4890 coreutils: tty hijacking possible in "su" via TIOCSTI ioctl

Affected: Red Hat Enterprise Linux 4.

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2005-4890
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/cve-2005-4890
generic

oss-security - CVE Request: pkexec tty hijacking via TIOCSTI ioctl

http://www.openwall.com/lists/oss-security/2016/02/25/6
generic

oss-security - Re: Multiple disputed issues in util-vserver

http://www.openwall.com/lists/oss-security/2014/12/15/5
generic

oss-security - AW: Multiple disputed issues in util-vserver

http://www.openwall.com/lists/oss-security/2014/10/21/1
generic

oss-security - Re: Multiple disputed issues in util-vserver

http://www.openwall.com/lists/oss-security/2014/10/20/9
generic

oss-security - Re: CVE Request: adequate: privilege escalation via tty hijacking

http://www.openwall.com/lists/oss-security/2013/11/29/5
generic

oss-security - CVE Request: adequate: privilege escalation via tty hijacking

http://www.openwall.com/lists/oss-security/2013/11/28/10
generic

oss-security - tty-hijacking & CVE-2005-4890 - redux

http://www.openwall.com/lists/oss-security/2013/05/20/3
generic

oss-security - Re: Re: TTY handling when executing code in different lower-privileged context (su, virt containers)

http://www.openwall.com/lists/oss-security/2012/11/06/8

Affected Packages

(8 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
shadow—1:4.1.5-1—
sudo—1.7.4p4—
Debian:12(2)
PackageVulnerable rangeFixed inDependents
shadow—1:4.1.5-1—
sudo—1.7.4p4—
Debian:13(2)
PackageVulnerable rangeFixed inDependents
shadow—1:4.1.5-1—
sudo—1.7.4p4—
Debian:14(2)
PackageVulnerable rangeFixed inDependents
shadow—1:4.1.5-1—
sudo—1.7.4p4—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 0× in last 7d / 8× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-14 22:54 UTCOSV refresh
  2. 2026-08-08 16:30 UTCEPSS rescore
  3. 2026-08-05 19:11 UTCEPSS rescore
  4. 2026-08-03 10:27 UTCEPSS rescore
  5. 2026-07-30 11:14 UTCOSV refresh
  6. 2026-07-24 14:11 UTCEPSS rescore
  7. 2026-07-23 00:49 UTCEG score recompute
  8. 2026-07-23 00:29 UTCEG score recompute
  9. 2026-07-22 23:53 UTCEG score recompute
  10. 2026-07-22 21:33 UTCEG score recompute
  11. 2026-07-20 17:02 UTCEPSS rescore
  12. 2026-07-18 09:59 UTCEPSS rescore
  13. 2026-07-16 16:58 UTCEPSS rescore
  14. 2026-07-15 16:53 UTCEPSS rescore
  15. 2026-07-15 01:55 UTCEPSS rescore
  16. 2026-07-13 22:25 UTCEPSS rescore
  17. 2026-07-13 06:07 UTCEPSS rescore
  18. 2026-07-13 06:07 UTCEPSS rescore
  19. 2026-07-12 20:37 UTCOSV refresh
  20. 2026-07-11 08:22 UTCEPSS rescore
  21. 2026-07-09 19:03 UTCEPSS rescore
  22. 2026-07-08 15:09 UTCEPSS rescore
  23. 2026-07-06 02:19 UTCEPSS rescore
  24. 2026-07-06 02:19 UTCEPSS rescore
  25. 2026-07-04 06:26 UTCEPSS rescore
Show 58 more
  1. 2026-07-02 14:00 UTCEPSS rescore
  2. 2026-07-01 15:01 UTCEPSS rescore
  3. 2026-06-29 14:02 UTCEPSS rescore
  4. 2026-06-29 14:02 UTCEPSS rescore
  5. 2026-06-27 03:04 UTCEPSS rescore
  6. 2026-06-25 13:46 UTCEPSS rescore
  7. 2026-06-24 14:01 UTCEPSS rescore
  8. 2026-06-24 14:01 UTCEPSS rescore
  9. 2026-06-24 06:20 UTCOSV refresh
  10. 2026-06-23 21:29 UTCEPSS rescore
  11. 2026-06-23 21:29 UTCEPSS rescore
  12. 2026-06-22 14:22 UTCEPSS rescore
  13. 2026-06-21 01:56 UTCEPSS rescore
  14. 2026-06-19 19:22 UTCEPSS rescore
  15. 2026-06-19 19:22 UTCEPSS rescore
  16. 2026-06-18 17:49 UTCEPSS rescore
  17. 2026-06-18 17:49 UTCEPSS rescore
  18. 2026-06-17 17:49 UTCEPSS rescore
  19. 2026-06-17 17:49 UTCEPSS rescore
  20. 2026-06-16 17:49 UTCEPSS rescore
  21. 2026-06-16 17:49 UTCEPSS rescore
  22. 2026-06-15 17:44 UTCEPSS rescore
  23. 2026-06-14 23:13 UTCEPSS rescore
  24. 2026-06-13 22:56 UTCEPSS rescore
  25. 2026-06-12 23:08 UTCEPSS rescore
  26. 2026-06-11 13:55 UTCEPSS rescore
  27. 2026-06-10 22:14 UTCEPSS rescore
  28. 2026-06-10 13:17 UTCEPSS rescore
  29. 2026-06-07 15:21 UTCEPSS rescore
  30. 2026-06-07 09:59 UTCOSV refresh
  31. 2026-06-06 13:44 UTCEPSS rescore
  32. 2026-06-06 13:44 UTCEPSS rescore
  33. 2026-06-05 22:43 UTCEPSS rescore
  34. 2026-06-05 06:07 UTCEPSS rescore
  35. 2026-06-05 06:07 UTCEPSS rescore
  36. 2026-06-04 13:09 UTCEPSS rescore
  37. 2026-06-04 13:09 UTCEPSS rescore
  38. 2026-06-02 20:10 UTCEPSS rescore
  39. 2026-06-02 20:10 UTCEPSS rescore
  40. 2026-06-01 13:49 UTCEPSS rescore
  41. 2026-06-01 13:49 UTCEPSS rescore
  42. 2026-06-01 13:49 UTCEPSS rescore
  43. 2026-05-31 22:28 UTCEPSS rescore
  44. 2026-05-31 00:13 UTCEPSS rescore
  45. 2026-05-31 00:13 UTCEPSS rescore
  46. 2026-05-31 00:13 UTCEPSS rescore
  47. 2026-05-29 13:40 UTCEPSS rescore
  48. 2026-05-28 13:42 UTCEPSS rescore
  49. 2026-05-28 13:42 UTCEPSS rescore
  50. 2026-05-27 13:37 UTCEPSS rescore
  51. 2026-05-27 13:37 UTCEPSS rescore
  52. 2026-05-26 13:41 UTCEPSS rescore
  53. 2026-05-26 13:41 UTCEPSS rescore
  54. 2026-05-26 07:16 UTCEPSS rescore
  55. 2026-05-26 07:16 UTCEPSS rescore
  56. 2026-05-24 16:42 UTCEPSS rescore
  57. 2026-05-23 03:19 UTCEG score recompute
  58. 2026-05-23 03:19 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2005-4890?
CVE-2005-4890 is a high vulnerability published on November 4, 2019. 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.
When was CVE-2005-4890 disclosed?
CVE-2005-4890 was first published in the National Vulnerability Database on November 4, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2005-4890 actively exploited?
CVE-2005-4890 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 52.4% of all scored CVEs.
What is the CVSS score of CVE-2005-4890?
CVE-2005-4890 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2005-4890?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2005-4890, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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