CVE-2025-8114

MEDIUMNVD 4.74.7—
EchelonGraph scoreMEDIUM confidence

Score 4.7 from GitHub Security Advisory published 2025-07-25. NVD baseline CVSS 4.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week
4.7EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 4.7Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.

CVSS v3
4.7
EG Score
4.7MEDIUMmedium confidence
EG Risk
21
EG Risk 21/100

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 (value × EchelonGraph’s weight)
Severity47% × 45%
The EG Score, 4.7 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
11th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 24, 2025

Last Modified

September 1, 2026

Advisory Details (6)

Auto-updated Jun 27, 2026
Patch available. Sources: redhat.
Web page
https://www.libssh.org/security/advisories/CVE-2025-8114.txt
Web page

projects/libssh.git - libssh shared repository

https://git.libssh.org/projects/libssh.git/commit/?id=65f363c9
Web page

projects/libssh.git - libssh shared repository

https://git.libssh.org/projects/libssh.git/commit/?id=53ac23ded4cb2c5463f6c4cd1525331bd578812d
Red HatMentions a patch (unverified)

2383220 – (CVE-2025-8114) CVE-2025-8114 libssh: NULL Pointer Dereference in libssh KEX Session ID Calculation

Affected: Red Hat Enterprise Linux 9

https://bugzilla.redhat.com/show_bug.cgi?id=2383220
Red HatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2025-8114
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:18683

Vendor Advisories for CVE-2025-8114(3)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibssh-gcrypt-dev (0.6.3-4.3ubuntu0.6+esm3) @ xenial2026-09-01ubuntu
redhatlibssh-0:0.10.4-18.el92026-05-19redhat

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 rangeFix by version rangeDependents
libssh0.9.5-1 ... 0.9.8-0+deb11u1 (6 versions)
  • every version up to 0.9.8-0+deb11u2: fixed in 0.9.8-0+deb11u2
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libssh0.10.5-2, 0.10.5-3, 0.10.5-3+hurd.1, 0.10.6-0+deb12u1
  • every version up to 0.10.6-0+deb12u2: fixed in 0.10.6-0+deb12u2
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libssh0.11.2-1
  • every version up to 0.11.2-1+deb13u1: fixed in 0.11.2-1+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libssh0.11.2-1
  • every version up to 0.11.3-1: fixed in 0.11.3-1
—

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 12× in last 7d / 29× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 95 of 205 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 5 repeat rows among the latest 100 are merged into the row they repeat. The 110 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 20:19 UTCEG score recompute
  2. 2026-10-11 18:31 UTCEG score recompute
  3. 2026-10-11 15:05 UTCEG score recompute
  4. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  5. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  6. 2026-10-10 00:55 UTCOSV refresh
  7. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  8. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  9. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  10. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  11. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  12. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  13. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  14. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  15. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  16. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  17. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  18. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  19. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  20. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  21. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  22. 2026-09-20 09:03 UTCOSV refresh
  23. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  24. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  25. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.2% · 12th percentile
Show 70 more
  1. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  2. 2026-09-15 03:10 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  3. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  4. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  5. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  6. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  7. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  8. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  9. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  10. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  11. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  12. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  13. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  14. 2026-09-01 12:31 UTCVendor advisory
  15. 2026-09-01 12:30 UTCGHSA enrichmentGHSA-fpr2-pgq7-qwg4 · GitHub CVSS 4.7
  16. 2026-09-01 12:02 UTCEG score recompute
  17. 2026-09-01 12:02 UTCVendor advisory
  18. 2026-09-01 12:02 UTCGHSA enrichmentGHSA-fpr2-pgq7-qwg4 · GitHub CVSS 4.7
  19. 2026-08-31 16:43 UTCVendor advisory
  20. 2026-08-31 16:43 UTCGHSA enrichmentGHSA-fpr2-pgq7-qwg4 · GitHub CVSS 4.7
  21. 2026-08-31 15:09 UTCEG score recompute
  22. 2026-08-31 15:09 UTCVendor advisory
  23. 2026-08-31 15:09 UTCGHSA enrichmentGHSA-fpr2-pgq7-qwg4 · GitHub CVSS 4.7
  24. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  25. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  26. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  27. 2026-08-26 14:45 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  28. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  29. 2026-08-24 14:16 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  30. 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  31. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  32. 2026-08-21 12:20 UTCVendor advisory
  33. 2026-08-21 12:20 UTCGHSA enrichmentGHSA-fpr2-pgq7-qwg4 · GitHub CVSS 4.7
  34. 2026-08-21 12:15 UTCEG score recompute
  35. 2026-08-21 12:15 UTCVendor advisory
  36. 2026-08-21 12:15 UTCGHSA enrichmentGHSA-fpr2-pgq7-qwg4 · GitHub CVSS 4.7
  37. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  38. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  39. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  40. 2026-08-17 13:46 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  41. 2026-08-16 14:55 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  42. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  43. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  44. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  45. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  46. 2026-08-12 09:17 UTCOSV refresh
  47. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  48. 2026-08-10 23:59 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  49. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  50. 2026-08-08 16:36 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  51. 2026-08-07 16:27 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  52. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  53. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  54. 2026-08-04 10:37 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  55. 2026-08-03 10:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  56. 2026-08-02 02:26 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  57. 2026-08-01 04:15 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  58. 2026-07-30 16:27 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  59. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  60. 2026-07-27 16:27 UTCOSV refresh
  61. 2026-07-27 14:13 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  62. 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  63. 2026-07-25 14:17 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  64. 2026-07-24 14:17 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  65. 2026-07-23 14:18 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  66. 2026-07-23 03:03 UTCEG score recompute
  67. 2026-07-22 14:08 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  68. 2026-07-21 15:24 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  69. 2026-07-20 17:08 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  70. 2026-07-19 14:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile

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Frequently asked(5)

What is CVE-2025-8114?
CVE-2025-8114 is a medium-severity vulnerability; its CVE record was published on July 24, 2025. A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.
When was CVE-2025-8114 made public?
CVE-2025-8114 was made public on July 24, 2025: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on July 24, 2025. EchelonGraph's copy of the record carries a last-modified date of September 1, 2026; the record at its source may have been updated since.
Is CVE-2025-8114 actively exploited?
CVE-2025-8114 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (11th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-8114?
CVE-2025-8114 has a CVSS v3 base score of 4.7 (NVD).
How do I remediate CVE-2025-8114?
A fix for CVE-2025-8114 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-8114 are linked in the Vendor Advisories panel on this page.

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