CVE-2025-40780

HIGHNVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2025-10-22. NVD baseline CVSS 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.6
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.6Exploit: NoneExposed: 0

A fix is available — apply it.

In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use. This issue affects BIND 9 versions 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.16.8-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.

CVSS v3
8.6
EG Score
8.6(medium)
EPSS
36.6%
KEV
Not listed

Published

October 22, 2025

Last Modified

April 15, 2026

References (2)

Vendor Advisories for CVE-2025-40780(20)

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

Patch Availability(25)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntubind9-utils (1:9.20.11-1ubuntu2.1) @ questing2026-05-21ubuntu
ubuntudnsutils (1:9.18.30-0ubuntu0.20.04.2+esm1) @ focal2026-05-21ubuntu
redhatbind-main-9.18.48-1.hum12026-04-07redhat
redhatrhcos-415.92.202601271320-02026-02-05redhat
redhatrhcos-414.92.202601191325-02026-01-30redhat
redhatrhcos-4.19.9.6.202601130152-02026-01-22redhat
redhatrhcos-413.92.202601130113-02026-01-22redhat
redhatrhcos-417.94.202601120213-02026-01-22redhat
redhatrhcos-416.94.202601071926-02026-01-15redhat
redhatrhcos-412.86.202601061735-02026-01-15redhat
redhatrhcos-418.94.202601071817-02026-01-15redhat
redhatrhcos-4.20.9.6.202601052146-02026-01-14redhat
redhatbind9.16-32:9.16.23-0.7.el8_6.92025-11-26redhat
redhatdiscovery/discovery-ui-rhel9:2.4.0-17636561522025-11-24redhat
redhatbind9.16-32:9.16.23-0.14.el8_8.72025-11-24redhat
redhatbind-32:9.16.23-18.el9_4.102025-11-20redhat
redhatbind-32:9.16.23-1.el9_0.112025-11-20redhat
redhatbind-32:9.16.23-11.el9_2.92025-11-20redhat
redhatbind9.18-32:9.18.29-5.el9_7.22025-11-12redhat
redhatbind-32:9.16.23-34.el9_7.12025-11-12redhat
redhatbind-32:9.18.33-10.el10_1.22025-11-11redhat
redhatbind9.18-32:9.18.29-4.el9_6.22025-11-10redhat
redhatbind-32:9.16.23-31.el9_6.22025-11-10redhat
redhatbind-32:9.18.33-4.el10_0.22025-11-06redhat
redhatbind9.16-32:9.16.23-0.22.el8_10.42025-11-05redhat

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

(5)

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 13× in last 7d / 50× 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 108 total refreshes for this CVE.

  1. 2026-07-16 17:02 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 16:57 UTCEPSS rescore
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  22. 2026-06-30 23:22 UTCEPSS rescore
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  24. 2026-06-29 14:06 UTCEPSS rescore
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  1. 2026-06-28 14:07 UTCEPSS rescore
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  19. 2026-06-19 19:25 UTCEPSS rescore
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  21. 2026-06-18 17:52 UTCEPSS rescore
  22. 2026-06-18 17:52 UTCEPSS rescore
  23. 2026-06-17 17:52 UTCEPSS rescore
  24. 2026-06-16 17:52 UTCEPSS rescore
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  26. 2026-06-14 23:17 UTCEPSS rescore
  27. 2026-06-13 23:00 UTCEPSS rescore
  28. 2026-06-12 23:11 UTCEPSS rescore
  29. 2026-06-11 14:00 UTCEPSS rescore
  30. 2026-06-10 22:18 UTCEPSS rescore
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  41. 2026-06-04 13:12 UTCEPSS rescore
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  44. 2026-06-01 13:51 UTCEPSS rescore
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  46. 2026-05-31 22:30 UTCEPSS rescore
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  48. 2026-05-31 00:16 UTCEPSS rescore
  49. 2026-05-29 13:44 UTCEPSS rescore
  50. 2026-05-28 13:44 UTCEPSS rescore
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  67. 2026-05-22 21:16 UTCEPSS rescore
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  70. 2026-05-22 21:16 UTCEPSS rescore
  71. 2026-05-21 05:59 UTCEG score recompute
  72. 2026-05-21 05:59 UTCVendor advisory
  73. 2026-05-21 05:59 UTCGHSA enrichment
  74. 2026-05-20 22:37 UTCEPSS rescore
  75. 2026-05-20 22:37 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-40780?
CVE-2025-40780 is a high vulnerability published on October 22, 2025. In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use. This issue affects BIND 9 versions 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through…
When was CVE-2025-40780 disclosed?
CVE-2025-40780 was first published in the National Vulnerability Database on October 22, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-40780 actively exploited?
CVE-2025-40780 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 36.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-40780?
CVE-2025-40780 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2025-40780?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-40780, 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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