CVE-2025-14821

HIGHNVD 7.07.8▲
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-04-07. NVD baseline CVSS 7.0; sources differ by 0.8.

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: 0%CVSS: 7.0Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an insecure default configuration on Windows systems where the library automatically loads configuration files from the C:\etc directory, which can be created and modified by unprivileged local users.

CVSS v3
7.0
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

April 7, 2026

Last Modified

August 31, 2026

Advisory Details (4)

Auto-updated Apr 29, 2026
Patch available. Sources: redhat.
generic

libssh 0.12.0 and 0.11.4 security releases – libssh

https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/
redhat

2423148 – (CVE-2025-14821) CVE-2025-14821 libssh: libssh: Insecure default configuration leads to local man-in-the-middle attacks on Windows

https://bugzilla.redhat.com/show_bug.cgi?id=2423148
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2025-14821
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:7067

Vendor Advisories for CVE-2025-14821(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatlibssh-main-0.12.0-1.1.hum12026-04-08redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 40× 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.

Showing the most recent 100 of 234 total refreshes for this CVE.

  1. 2026-09-15 03:08 UTCEPSS rescore
  2. 2026-09-13 16:45 UTCEPSS rescore
  3. 2026-09-12 14:59 UTCEPSS rescore
  4. 2026-09-11 14:51 UTCEPSS rescore
  5. 2026-09-11 09:35 UTCEPSS rescore
  6. 2026-09-10 09:33 UTCEPSS rescore
  7. 2026-09-08 21:59 UTCEPSS rescore
  8. 2026-09-07 16:00 UTCEPSS rescore
  9. 2026-09-06 13:46 UTCEPSS rescore
  10. 2026-09-04 13:59 UTCEPSS rescore
  11. 2026-09-04 05:05 UTCEPSS rescore
  12. 2026-09-02 14:10 UTCEPSS rescore
  13. 2026-09-01 13:52 UTCEPSS rescore
  14. 2026-09-01 04:38 UTCEPSS rescore
  15. 2026-08-31 12:28 UTCVendor advisory
  16. 2026-08-31 12:28 UTCGHSA enrichment
  17. 2026-08-31 11:55 UTCEG score recompute
  18. 2026-08-31 11:55 UTCVendor advisory
  19. 2026-08-31 11:55 UTCGHSA enrichment
  20. 2026-08-30 19:16 UTCEPSS rescore
  21. 2026-08-30 01:21 UTCEPSS rescore
  22. 2026-08-28 21:40 UTCEPSS rescore
  23. 2026-08-27 14:24 UTCEPSS rescore
  24. 2026-08-25 13:47 UTCEPSS rescore
  25. 2026-08-24 14:15 UTCEPSS rescore
Show 75 more
  1. 2026-08-23 00:18 UTCEPSS rescore
  2. 2026-08-21 23:48 UTCEPSS rescore
  3. 2026-08-21 13:22 UTCVendor advisory
  4. 2026-08-21 13:22 UTCGHSA enrichment
  5. 2026-08-21 13:09 UTCEG score recompute
  6. 2026-08-21 13:09 UTCVendor advisory
  7. 2026-08-21 13:09 UTCGHSA enrichment
  8. 2026-08-20 22:54 UTCEPSS rescore
  9. 2026-08-19 17:02 UTCEPSS rescore
  10. 2026-08-18 13:47 UTCEPSS rescore
  11. 2026-08-17 13:46 UTCEPSS rescore
  12. 2026-08-16 14:55 UTCEPSS rescore
  13. 2026-08-16 08:07 UTCEG score recompute
  14. 2026-08-16 08:07 UTCVendor advisory
  15. 2026-08-16 08:07 UTCGHSA enrichment
  16. 2026-08-16 02:13 UTCEPSS rescore
  17. 2026-08-16 02:13 UTCEPSS rescore
  18. 2026-08-15 01:29 UTCEPSS rescore
  19. 2026-08-14 18:33 UTCVendor advisory
  20. 2026-08-14 18:33 UTCGHSA enrichment
  21. 2026-08-14 05:26 UTCEG score recompute
  22. 2026-08-14 05:26 UTCVendor advisory
  23. 2026-08-14 05:26 UTCGHSA enrichment
  24. 2026-08-13 21:59 UTCEPSS rescore
  25. 2026-08-13 09:40 UTCVendor advisory
  26. 2026-08-13 09:40 UTCGHSA enrichment
  27. 2026-08-12 19:40 UTCEG score recompute
  28. 2026-08-12 19:40 UTCVendor advisory
  29. 2026-08-12 19:40 UTCGHSA enrichment
  30. 2026-08-12 13:49 UTCEPSS rescore
  31. 2026-08-11 19:53 UTCEG score recompute
  32. 2026-08-11 19:53 UTCVendor advisory
  33. 2026-08-11 19:53 UTCGHSA enrichment
  34. 2026-08-11 13:41 UTCEPSS rescore
  35. 2026-08-11 03:14 UTCEG score recompute
  36. 2026-08-11 03:14 UTCVendor advisory
  37. 2026-08-11 03:14 UTCGHSA enrichment
  38. 2026-08-10 23:59 UTCEPSS rescore
  39. 2026-08-10 04:14 UTCVendor advisory
  40. 2026-08-10 04:14 UTCGHSA enrichment
  41. 2026-08-09 16:35 UTCEG score recompute
  42. 2026-08-09 16:35 UTCVendor advisory
  43. 2026-08-09 16:35 UTCGHSA enrichment
  44. 2026-08-09 13:45 UTCEPSS rescore
  45. 2026-08-09 04:56 UTCEG score recompute
  46. 2026-08-09 04:56 UTCVendor advisory
  47. 2026-08-09 04:56 UTCGHSA enrichment
  48. 2026-08-08 02:35 UTCEG score recompute
  49. 2026-08-08 02:35 UTCVendor advisory
  50. 2026-08-08 02:35 UTCGHSA enrichment
  51. 2026-08-07 16:26 UTCEPSS rescore
  52. 2026-08-07 14:56 UTCEG score recompute
  53. 2026-08-07 14:56 UTCVendor advisory
  54. 2026-08-07 14:56 UTCGHSA enrichment
  55. 2026-08-06 13:45 UTCEPSS rescore
  56. 2026-08-06 12:57 UTCVendor advisory
  57. 2026-08-06 12:57 UTCGHSA enrichment
  58. 2026-08-06 00:00 UTCEG score recompute
  59. 2026-08-06 00:00 UTCVendor advisory
  60. 2026-08-06 00:00 UTCGHSA enrichment
  61. 2026-08-05 19:16 UTCEPSS rescore
  62. 2026-08-04 15:09 UTCEPSS rescore
  63. 2026-08-04 10:37 UTCEPSS rescore
  64. 2026-08-03 22:22 UTCEG score recompute
  65. 2026-08-03 22:22 UTCVendor advisory
  66. 2026-08-03 22:22 UTCGHSA enrichment
  67. 2026-08-03 10:35 UTCEPSS rescore
  68. 2026-08-03 01:56 UTCVendor advisory
  69. 2026-08-03 01:56 UTCGHSA enrichment
  70. 2026-08-02 14:18 UTCEG score recompute
  71. 2026-08-02 14:18 UTCVendor advisory
  72. 2026-08-02 14:18 UTCGHSA enrichment
  73. 2026-08-02 02:25 UTCEPSS rescore
  74. 2026-08-01 04:14 UTCEPSS rescore
  75. 2026-07-30 16:26 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-14821?
CVE-2025-14821 is a high vulnerability published on April 7, 2026. A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an…
When was CVE-2025-14821 disclosed?
CVE-2025-14821 was first published in the National Vulnerability Database on April 7, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-14821 actively exploited?
CVE-2025-14821 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 97.1% of all scored CVEs.
What is the CVSS score of CVE-2025-14821?
CVE-2025-14821 has a CVSS v3 base score of 7.0 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.8.
How do I remediate CVE-2025-14821?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-14821, 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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