Search/CVE-2026-77119
● CVE — Medium

CVE-2026-77119

DiscoveredSep 16, 2026UpdatedOct 26, 2026

A validly signed NSEC3 from an unrelated sibling zone may be accepted as an insecurity proof, downgrading a secure delegation and letting a forged unsigned answer through. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

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CVSS v3.1
5.9 MEDIUM
EPSS
0.23%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
2
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Sep 19, 2026 → Oct 6, 2026
▲ 0.04pp
0.19% → 0.23% over 3 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityHIGH
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityNONE
IntegrityHIGH
AvailabilityNONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Connections
3 relationships
Timeline
disclosure → media coverage
Sep 16, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 26, 2026
Sep 17, 2026
thehackernews.com reports: BIND 9 Update Fixes 14 Flaws, Including an Unauthenticated Crash Over DNS-over-HTTPS
Nov 3, 2026
ubuntu.com reports: USN-8969-1: Bind vulnerabilities