CVE-2025-11411

MEDIUMNVD 5.75.7—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.7 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 79% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
5.7
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.7Exploit: NoneExposed: 0

A fix is available — apply it.

NLnet Labs Unbound up to and including version 1.24.1 is vulnerable to possible domain hijack attacks. Promiscuous NS RRSets that complement positive DNS replies in the authority section can be used to trick resolvers to update their delegation information for the zone. Usually these RRSets are used to update the resolver's knowledge of the zone's name servers. A malicious actor can exploit the possible poisonous effect by injecting NS RRSets (and possibly their respective address records) in a reply. This could be done for example by trying to spoof a packet or fragmentation attacks. Unbound would then proceed to update the NS RRSet data it already has since the new data has enough trust for it, i.e., in-zone data for the delegation point. Unbound 1.24.1 includes a fix that scrubs unsolicited NS RRSets (and their respective address records) from replies mitigating the possible poison effect. Unbound 1.24.2 includes an additional fix that scrubs unsolicited NS RRSets (and their respective address records) from YXDOMAIN and non-referral nodata replies, further mitigating the possible poison effect.

CVSS v3
5.7
EG Score
5.7(medium)
EG Risk
—
EPSS
24.1%
KEV
Not listed

Published

October 22, 2025

Last Modified

April 15, 2026

References (4)

Vendor Advisories for CVE-2025-11411(1)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuunbound-host (1.22.0-2ubuntu2.1) @ questing2026-06-08ubuntu
ubuntuunbound-host (1.22.0-2ubuntu2.2) @ questing2026-06-08ubuntu
redhatunbound-0:1.24.2-2.el92026-05-19redhat
redhatunbound-0:1.24.2-7.el102026-05-19redhat
redhatunbound-main-1.24.2-11.1.hum12026-04-11redhat

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 10× in last 7d / 43× 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 118 total refreshes for this CVE.

  1. 2026-07-22 14:07 UTCEPSS rescore
  2. 2026-07-22 14:07 UTCEPSS rescore
  3. 2026-07-21 15:24 UTCEPSS rescore
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  1. 2026-07-06 16:26 UTCEPSS rescore
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  8. 2026-06-30 23:21 UTCEPSS rescore
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  23. 2026-06-21 01:59 UTCEPSS rescore
  24. 2026-06-19 19:25 UTCEPSS rescore
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  26. 2026-06-18 17:52 UTCEPSS rescore
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  39. 2026-06-10 13:21 UTCEPSS rescore
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  41. 2026-06-08 15:22 UTCEG score recompute▲ 5.70
  42. 2026-06-08 15:22 UTCVendor advisory
  43. 2026-06-08 15:22 UTCGHSA enrichment
  44. 2026-06-08 14:16 UTCEPSS rescore
  45. 2026-06-08 14:16 UTCEPSS rescore
  46. 2026-06-07 15:24 UTCEPSS rescore
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  75. 2026-05-22 21:16 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-11411?
CVE-2025-11411 is a medium vulnerability published on October 22, 2025. NLnet Labs Unbound up to and including version 1.24.1 is vulnerable to possible domain hijack attacks. Promiscuous NS RRSets that complement positive DNS replies in the authority section can be used to trick resolvers to update their delegation information for the zone. Usually these RRSets are…
When was CVE-2025-11411 disclosed?
CVE-2025-11411 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-2025-11411 actively exploited?
CVE-2025-11411 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 24.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-11411?
CVE-2025-11411 has a CVSS v3 base score of 5.7 (NVD).
How do I remediate CVE-2025-11411?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-11411, 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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