CVE-2026-89092Medium· 4.2▾ SunlitA flaw was found in glibc, specifically within the nscd service. A remote attacker, operating a malicious Domain Name System (DNS) server, could send an overly large DNS response. This could trigger a stack overflow in the nscd service, ca…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 23.1 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the vendor's CSAF advisory record, not NVD.
Exploit-prediction probability, daily snapshots since Sep 11.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
0.2% → 0.3%
Last analysed / modified upstream
A flaw was found in glibc, specifically within the nscd service. A remote attacker, operating a malicious Domain Name System (DNS) server, could send an overly large DNS response. This could trigger a stack overflow in the nscd service, causing it to crash and leading to degraded DNS resolution for the system. There is also a remote possibility of nscd cache corruption.
glibc: nscd stack overflow leads to degraded DNS resolution — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-10-02.
Affected:
No fix planned:
Not affected:
Fix deferred
Connected by shared product, vendor, weakness, or advisory.
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