CVE-2019-17498

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 4%CVSS: 8.1Exploit: NoneExposed: 0

A fix is available — apply it.

In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.

CVSS v3
8.1
EG Score
8.1(medium)
EPSS
88.9%
KEV
Not listed

Published

October 21, 2019

Last Modified

November 21, 2024

References (24)

Vendor Advisories for CVE-2019-17498(2)

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
ubuntulibssh2-1 (1.5.0-2ubuntu0.1+esm1) @ xenial2026-05-27ubuntu
redhatopenshiftdo/odo-init-image-rhel7:1.1.3-22021-03-22redhat
redhatlibssh2-0:1.8.0-4.el72020-09-29redhat

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.

Weakness Classification(1)

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

Additional Vendor Advisories

(2)

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 14× in last 7d / 46× 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. 2026-07-22 22:22 UTCEG score recompute
  2. 2026-07-22 14:05 UTCEPSS rescore
  3. 2026-07-21 15:22 UTCEPSS rescore
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  7. 2026-07-20 03:16 UTCOSV refresh
  8. 2026-07-19 14:28 UTCEPSS rescore
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  1. 2026-07-07 13:43 UTCEPSS rescore
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  5. 2026-07-05 02:27 UTCEPSS rescore
  6. 2026-07-04 06:28 UTCEPSS rescore
  7. 2026-07-02 18:05 UTCOSV refresh
  8. 2026-07-01 15:03 UTCEPSS rescore
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  10. 2026-06-30 23:20 UTCEPSS rescore
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  27. 2026-06-18 17:50 UTCEPSS rescore
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  30. 2026-06-15 17:45 UTCEPSS rescore
  31. 2026-06-14 23:15 UTCEPSS rescore
  32. 2026-06-14 23:15 UTCEPSS rescore
  33. 2026-06-14 16:13 UTCOSV refresh
  34. 2026-06-13 22:58 UTCEPSS rescore
  35. 2026-06-12 23:09 UTCEPSS rescore
  36. 2026-06-11 13:58 UTCEPSS rescore
  37. 2026-06-10 22:16 UTCEPSS rescore
  38. 2026-06-10 13:19 UTCEPSS rescore
  39. 2026-06-08 14:15 UTCEPSS rescore
  40. 2026-06-07 15:23 UTCEPSS rescore
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  42. 2026-06-06 13:45 UTCEPSS rescore
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  44. 2026-06-05 22:45 UTCEPSS rescore
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  46. 2026-06-05 06:08 UTCEPSS rescore
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  48. 2026-06-04 13:10 UTCEPSS rescore
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  50. 2026-06-02 20:11 UTCEPSS rescore
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  52. 2026-06-01 13:50 UTCEPSS rescore
  53. 2026-06-01 13:50 UTCEPSS rescore
  54. 2026-05-31 22:29 UTCEPSS rescore
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  56. 2026-05-31 00:14 UTCEPSS rescore
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  58. 2026-05-29 13:42 UTCEPSS rescore
  59. 2026-05-28 13:43 UTCEPSS rescore
  60. 2026-05-27 13:38 UTCEPSS rescore
  61. 2026-05-27 12:41 UTCEG score recompute
  62. 2026-05-27 12:41 UTCVendor advisory
  63. 2026-05-27 12:41 UTCGHSA enrichment
  64. 2026-05-26 22:14 UTCOSV refresh
  65. 2026-05-26 13:42 UTCEPSS rescore
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  67. 2026-05-26 07:17 UTCEPSS rescore
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  69. 2026-05-26 07:17 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2019-17498?
CVE-2019-17498 is a high vulnerability published on October 21, 2019. In libssh2 v1.9.0 and earlier versions, the SSHMSGDISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a…
When was CVE-2019-17498 disclosed?
CVE-2019-17498 was first published in the National Vulnerability Database on October 21, 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-2019-17498 actively exploited?
CVE-2019-17498 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 88.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2019-17498?
CVE-2019-17498 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2019-17498?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-17498, 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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