CVE-2026-15370

HIGHNVD 7.37.3—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.3 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 95% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.3Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in libssh. During SFTP server directory listing, the longname field is constructed with unsafe concatenation into a fixed-size stack buffer. When a client causes the server to list attacker-controlled filenames, sufficiently long names can overflow that stack buffer and may lead to crashes or possible code execution on the server.

CVSS v3
7.3
EG Score
7.3(medium)
EG Risk
33(Track)
EG Risk 33/100SSVC: 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
Severity73% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

July 21, 2026

Last Modified

August 17, 2026

Advisory Details (2)

Auto-updated Jul 21, 2026
Patch available. Sources: redhat.
redhat

2499049 – (CVE-2026-15370) CVE-2026-15370 libssh: libssh: stack buffer overflow in SFTP server longname construction

https://bugzilla.redhat.com/show_bug.cgi?id=2499049
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-15370

Vendor Advisories for CVE-2026-15370(3)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibssh-doc (0.11.3-1ubuntu2.1) @ resolute2026-09-19ubuntu
redhatlibssh-0:0.12.0-3.el10_22026-08-17redhat
redhatlibssh-main-0.12.2-1.hum12026-07-29redhat

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.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libssh0.10.4-1 ... 0.9.8-0+deb11u2 (25 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libssh0.10.5-2 ... 0.12.2-1 (17 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libssh0.11.2-1, 0.11.2-1+deb13u1, 0.11.3-10.11.5-0+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libssh0.11.2-1, 0.11.3-1, 0.12.0-1, 0.12.0-2, 0.12.0-30.12.1-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 27× in last 7d / 115× 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 276 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-15370?
CVE-2026-15370 is a high vulnerability published on July 21, 2026. A flaw was found in libssh. During SFTP server directory listing, the longname field is constructed with unsafe concatenation into a fixed-size stack buffer. When a client causes the server to list attacker-controlled filenames, sufficiently long names can overflow that stack buffer and may lead to…
When was CVE-2026-15370 disclosed?
CVE-2026-15370 was first published in the National Vulnerability Database on July 21, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15370 actively exploited?
CVE-2026-15370 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 95.2% of all scored CVEs.
What is the CVSS score of CVE-2026-15370?
CVE-2026-15370 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-15370?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15370, 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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