CVE-2026-28372

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 70% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
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: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing systemd service credentials support added to the login(1) implementation of util-linux in release 2.40. This is related to client control over the CREDENTIALS_DIRECTORY environment variable, and requires an unprivileged local user to create a login.noauth file.

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%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

February 27, 2026

Last Modified

June 17, 2026

Advisory Details (9)

Auto-updated Aug 2, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

oss-security - Re: CVE-2026-28372: Telnetd Vulnerability Report

http://www.openwall.com/lists/oss-security/2026/03/07/2
generic

oss-security - Re: CVE-2026-28372: Telnetd Vulnerability Report

http://www.openwall.com/lists/oss-security/2026/03/07/1
generic

oss-security - Re: CVE-2026-28372: Telnetd Vulnerability Report

http://www.openwall.com/lists/oss-security/2026/03/06/3
generic

oss-security - Re: CVE-2026-28372: Telnetd Vulnerability Report

http://www.openwall.com/lists/oss-security/2026/03/06/2
generic

oss-security - CVE-2026-28372: Telnetd Vulnerability Report

http://www.openwall.com/lists/oss-security/2026/02/27/3
generic🟡 PoC Available

oss-security - Re: Telnetd Vulnerability Report

https://www.openwall.com/lists/oss-security/2026/02/24/1
generic

Re: Telnetd Vulnerability Report

https://lists.gnu.org/archive/html/bug-inetutils/2026-02/msg00012.html
generic

Telnetd Vulnerability Report

https://lists.gnu.org/archive/html/bug-inetutils/2026-02/msg00000.html
generic

Making sure you're not a bot!

https://git.hadrons.org/cgit/debian/pkgs/inetutils.git/commit/?id=3953943d8296310485f98963883a798545ab9a6c

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
inetutils2:2.0-1, 2:2.0-1+deb11u1, 2:2.0-1+deb11u2, 2:2.0-1+deb11u32:2.0-1+deb11u4—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
inetutils2:2.4-2, 2:2.4-2+deb12u1, 2:2.4-2+deb12u22:2.4-2+deb12u3—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
inetutils2:2.6-3, 2:2.6-3+deb13u12:2.6-3+deb13u2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
inetutils2:2.6-3, 2:2.6-4, 2:2.7-1, 2:2.7-22:2.7-3—

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 30× 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. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 19:27 UTCEPSS rescore
  3. 2026-09-17 19:30 UTCEPSS rescore
  4. 2026-09-16 14:08 UTCEPSS rescore
  5. 2026-09-16 05:15 UTCEPSS rescore
  6. 2026-09-13 16:47 UTCEPSS rescore
  7. 2026-09-12 15:01 UTCEPSS rescore
  8. 2026-09-11 14:52 UTCEPSS rescore
  9. 2026-09-10 09:34 UTCEPSS rescore
  10. 2026-09-08 22:00 UTCEPSS rescore
  11. 2026-09-07 16:01 UTCEPSS rescore
  12. 2026-09-06 13:47 UTCEPSS rescore
  13. 2026-09-06 13:47 UTCEPSS rescore
  14. 2026-09-04 05:06 UTCEPSS rescore
  15. 2026-09-02 14:11 UTCEPSS rescore
  16. 2026-09-01 13:53 UTCEPSS rescore
  17. 2026-09-01 04:39 UTCEPSS rescore
  18. 2026-09-01 04:39 UTCEPSS rescore
  19. 2026-08-31 17:34 UTCOSV refresh
  20. 2026-08-30 19:17 UTCEPSS rescore
  21. 2026-08-30 01:22 UTCEPSS rescore
  22. 2026-08-28 21:41 UTCEPSS rescore
  23. 2026-08-27 14:25 UTCEPSS rescore
  24. 2026-08-26 14:46 UTCEPSS rescore
  25. 2026-08-25 13:49 UTCEPSS rescore
Show 64 more
  1. 2026-08-24 14:17 UTCEPSS rescore
  2. 2026-08-23 00:19 UTCEPSS rescore
  3. 2026-08-21 23:49 UTCEPSS rescore
  4. 2026-08-20 22:55 UTCEPSS rescore
  5. 2026-08-20 22:55 UTCEPSS rescore
  6. 2026-08-19 17:03 UTCEPSS rescore
  7. 2026-08-18 13:48 UTCEPSS rescore
  8. 2026-08-17 13:47 UTCEPSS rescore
  9. 2026-08-16 14:56 UTCEPSS rescore
  10. 2026-08-16 02:14 UTCEPSS rescore
  11. 2026-08-15 01:30 UTCEPSS rescore
  12. 2026-08-14 21:41 UTCVendor advisory
  13. 2026-08-14 21:41 UTCGHSA enrichment
  14. 2026-08-14 08:51 UTCEG score recompute
  15. 2026-08-14 08:51 UTCVendor advisory
  16. 2026-08-14 08:51 UTCGHSA enrichment
  17. 2026-08-13 22:00 UTCEPSS rescore
  18. 2026-08-13 00:48 UTCEG score recompute
  19. 2026-08-13 00:48 UTCVendor advisory
  20. 2026-08-13 00:48 UTCGHSA enrichment
  21. 2026-08-12 13:50 UTCEPSS rescore
  22. 2026-08-11 23:36 UTCEG score recompute
  23. 2026-08-11 23:36 UTCVendor advisory
  24. 2026-08-11 23:36 UTCGHSA enrichment
  25. 2026-08-11 13:42 UTCEPSS rescore
  26. 2026-08-11 06:10 UTCEG score recompute
  27. 2026-08-11 06:10 UTCVendor advisory
  28. 2026-08-11 06:10 UTCGHSA enrichment
  29. 2026-08-11 00:00 UTCEPSS rescore
  30. 2026-08-10 10:09 UTCVendor advisory
  31. 2026-08-10 10:09 UTCGHSA enrichment
  32. 2026-08-09 21:19 UTCEG score recompute
  33. 2026-08-09 21:19 UTCVendor advisory
  34. 2026-08-09 21:19 UTCGHSA enrichment
  35. 2026-08-09 13:46 UTCEPSS rescore
  36. 2026-08-09 08:29 UTCEG score recompute
  37. 2026-08-09 08:29 UTCVendor advisory
  38. 2026-08-09 08:29 UTCGHSA enrichment
  39. 2026-08-08 16:37 UTCEPSS rescore
  40. 2026-08-08 09:19 UTCVendor advisory
  41. 2026-08-08 09:19 UTCGHSA enrichment
  42. 2026-08-07 20:29 UTCEG score recompute
  43. 2026-08-07 20:29 UTCVendor advisory
  44. 2026-08-07 20:29 UTCGHSA enrichment
  45. 2026-08-06 13:46 UTCEPSS rescore
  46. 2026-08-06 02:55 UTCEG score recompute
  47. 2026-08-06 02:55 UTCVendor advisory
  48. 2026-08-06 02:55 UTCGHSA enrichment
  49. 2026-08-05 19:17 UTCEPSS rescore
  50. 2026-08-04 15:10 UTCEPSS rescore
  51. 2026-08-04 04:54 UTCEG score recompute
  52. 2026-08-04 04:54 UTCVendor advisory
  53. 2026-08-04 04:54 UTCGHSA enrichment
  54. 2026-08-03 10:36 UTCEPSS rescore
  55. 2026-08-02 19:23 UTCEG score recompute
  56. 2026-08-02 19:23 UTCVendor advisory
  57. 2026-08-02 19:23 UTCGHSA enrichment
  58. 2026-08-02 02:26 UTCEPSS rescore
  59. 2026-08-01 04:16 UTCEPSS rescore
  60. 2026-07-30 16:27 UTCEPSS rescore
  61. 2026-07-30 01:30 UTCEPSS rescore
  62. 2026-07-28 15:36 UTCEPSS rescore
  63. 2026-07-27 13:34 UTCEG score recompute
  64. 2026-07-27 13:34 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-28372?
CVE-2026-28372 is a high vulnerability published on February 27, 2026. telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing systemd service credentials support added to the login(1) implementation of util-linux in release 2.40. This is related to client control over the CREDENTIALS_DIRECTORY environment variable, and…
When was CVE-2026-28372 disclosed?
CVE-2026-28372 was first published in the National Vulnerability Database on February 27, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-28372 actively exploited?
CVE-2026-28372 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 68.8% of all scored CVEs.
What is the CVSS score of CVE-2026-28372?
CVE-2026-28372 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-28372?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-28372, 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.

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