CVE-2026-3592 Amplification vulnerabilities via self-pointed glue records
Attackers can cause resource exhaustion in BIND resolvers by serving specially crafted zones with self-pointed glue records.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-3592?
CVE-2026-3592 is a medium-severity denial of service vulnerability in Isc Bind, published on 20 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver makes a query to a specially crafted zone, the resolver will consume disproportionate resources. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
Weakness: CWE-408
Which versions are affected by CVE-2026-3592?
It affects 1 product.
Products include Isc Bind.
How do I fix CVE-2026-3592?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-3592 being exploited?
There is no known exploitation of CVE-2026-3592 in the wild and no public exploit code.
Other vulnerabilities in Isc Bind
Sources
Also known as ALPINE-CVE-2026-3592, AZL-87090, BELL-CVE-2026-3592, CLSA-2026-1780475528, CLSA-2026-1780475769, CLSA-2026-1780514354 and 7 more.