CVE-2021-25214

Vendordebian, fedoraproject, netapp, isc, siemensProductdebian linux, fedora, aff a250 firmware, h300e firmware, h300s firmware, h410s firmware, h500e firmware, h500s firmware, h700e firmware, h700s firmware, active iq unified manager, cloud backup, bind, sinec infrastructure network services, aff 500f firmwareDiscoveredApr 29, 2021UpdatedNov 21, 2024

In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.

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CVSS v3.1

6.5 MEDIUM

EPSS

6.40%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

EPSS Trend

Aug 16, 2026 → Oct 29, 2026

▲ 0.41pp

5.99% → 6.40% over 7 tracked changes

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

ScopeUNCHANGED

ConfidentialityNONE

IntegrityNONE

AvailabilityHIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Connections

16 relationships