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 / 31× 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. 2026-09-19 13:33 UTCOSV refresh
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 19:27 UTCEPSS rescore
  4. 2026-09-17 19:30 UTCEPSS rescore
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 05:15 UTCEPSS rescore
  7. 2026-09-13 16:47 UTCEPSS rescore
  8. 2026-09-12 15:01 UTCEPSS rescore
  9. 2026-09-11 14:52 UTCEPSS rescore
  10. 2026-09-10 09:34 UTCEPSS rescore
  11. 2026-09-08 22:00 UTCEPSS rescore
  12. 2026-09-07 16:01 UTCEPSS rescore
  13. 2026-09-06 13:47 UTCEPSS rescore
  14. 2026-09-06 13:47 UTCEPSS rescore
  15. 2026-09-04 05:06 UTCEPSS rescore
  16. 2026-09-02 14:11 UTCEPSS rescore
  17. 2026-09-01 13:53 UTCEPSS rescore
  18. 2026-09-01 04:39 UTCEPSS rescore
  19. 2026-09-01 04:39 UTCEPSS rescore
  20. 2026-08-31 17:34 UTCOSV refresh
  21. 2026-08-30 19:17 UTCEPSS rescore
  22. 2026-08-30 01:22 UTCEPSS rescore
  23. 2026-08-28 21:41 UTCEPSS rescore
  24. 2026-08-27 14:25 UTCEPSS rescore
  25. 2026-08-26 14:46 UTCEPSS rescore
Show 65 more
  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-24 14:17 UTCEPSS rescore
  3. 2026-08-23 00:19 UTCEPSS rescore
  4. 2026-08-21 23:49 UTCEPSS rescore
  5. 2026-08-20 22:55 UTCEPSS rescore
  6. 2026-08-20 22:55 UTCEPSS rescore
  7. 2026-08-19 17:03 UTCEPSS rescore
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-17 13:47 UTCEPSS rescore
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-16 02:14 UTCEPSS rescore
  12. 2026-08-15 01:30 UTCEPSS rescore
  13. 2026-08-14 21:41 UTCVendor advisory
  14. 2026-08-14 21:41 UTCGHSA enrichment
  15. 2026-08-14 08:51 UTCEG score recompute
  16. 2026-08-14 08:51 UTCVendor advisory
  17. 2026-08-14 08:51 UTCGHSA enrichment
  18. 2026-08-13 22:00 UTCEPSS rescore
  19. 2026-08-13 00:48 UTCEG score recompute
  20. 2026-08-13 00:48 UTCVendor advisory
  21. 2026-08-13 00:48 UTCGHSA enrichment
  22. 2026-08-12 13:50 UTCEPSS rescore
  23. 2026-08-11 23:36 UTCEG score recompute
  24. 2026-08-11 23:36 UTCVendor advisory
  25. 2026-08-11 23:36 UTCGHSA enrichment
  26. 2026-08-11 13:42 UTCEPSS rescore
  27. 2026-08-11 06:10 UTCEG score recompute
  28. 2026-08-11 06:10 UTCVendor advisory
  29. 2026-08-11 06:10 UTCGHSA enrichment
  30. 2026-08-11 00:00 UTCEPSS rescore
  31. 2026-08-10 10:09 UTCVendor advisory
  32. 2026-08-10 10:09 UTCGHSA enrichment
  33. 2026-08-09 21:19 UTCEG score recompute
  34. 2026-08-09 21:19 UTCVendor advisory
  35. 2026-08-09 21:19 UTCGHSA enrichment
  36. 2026-08-09 13:46 UTCEPSS rescore
  37. 2026-08-09 08:29 UTCEG score recompute
  38. 2026-08-09 08:29 UTCVendor advisory
  39. 2026-08-09 08:29 UTCGHSA enrichment
  40. 2026-08-08 16:37 UTCEPSS rescore
  41. 2026-08-08 09:19 UTCVendor advisory
  42. 2026-08-08 09:19 UTCGHSA enrichment
  43. 2026-08-07 20:29 UTCEG score recompute
  44. 2026-08-07 20:29 UTCVendor advisory
  45. 2026-08-07 20:29 UTCGHSA enrichment
  46. 2026-08-06 13:46 UTCEPSS rescore
  47. 2026-08-06 02:55 UTCEG score recompute
  48. 2026-08-06 02:55 UTCVendor advisory
  49. 2026-08-06 02:55 UTCGHSA enrichment
  50. 2026-08-05 19:17 UTCEPSS rescore
  51. 2026-08-04 15:10 UTCEPSS rescore
  52. 2026-08-04 04:54 UTCEG score recompute
  53. 2026-08-04 04:54 UTCVendor advisory
  54. 2026-08-04 04:54 UTCGHSA enrichment
  55. 2026-08-03 10:36 UTCEPSS rescore
  56. 2026-08-02 19:23 UTCEG score recompute
  57. 2026-08-02 19:23 UTCVendor advisory
  58. 2026-08-02 19:23 UTCGHSA enrichment
  59. 2026-08-02 02:26 UTCEPSS rescore
  60. 2026-08-01 04:16 UTCEPSS rescore
  61. 2026-07-30 16:27 UTCEPSS rescore
  62. 2026-07-30 01:30 UTCEPSS rescore
  63. 2026-07-28 15:36 UTCEPSS rescore
  64. 2026-07-27 13:34 UTCEG score recompute
  65. 2026-07-27 13:34 UTCGHSA enrichment

Related CVEs(same vendor + same CWE)

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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