CVE-2025-40778: high-severity vulnerability in ISC BIND 9
Cache poisoning attacks with unsolicited RRs
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 0.7%
exploitation probability
0.7%top 50% of all CVEs
observed exploitation
nono source reports it
Under certain circumstances, BIND is too lenient when accepting records from answers, allowing an attacker to inject forged data into the cache.
This issue affects BIND 9 versions 9.11.0 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, 9.11.3-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:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Affected products
ISC · BIND 9Related CVEs — ISC BIND 9
In the same product, most dangerous first.
CVE-2018-5740HIGHA flaw in the "deny-answer-aliases" feature can cause an assertion failure in namedEPSS 59.6%CVE-2022-3736HIGHnamed configured to answer from stale cache may terminate unexpectedly while processing RRSIG queriesEPSS 48.7%CVE-2017-3145HIGHImproper fetch cleanup sequencing in the resolver can cause named to crashEPSS 27.9%CVE-2022-3488HIGHnamed may terminate unexpectedly when processing ECS options in repeated responses to iterative queriesEPSS 19.2%CVE-2024-12705HIGHDNS-over-HTTPS implementation suffers from multiple issues under heavy query loadEPSS 18.4%CVE-2017-3143HIGHAn error in TSIG authentication can permit unauthorized dynamic updatesEPSS 18.3%