CVE-2024-11187 | Many records in the additional section cause CPU exhaustion

It is possible to construct a zone such that some queries to it will generate responses containing numerous records in the Additional section. An attacker sending many such queries can cause either the authoritative server itself or an independent resolver to use disproportionate resources processing the queries. Zones will usually need to have been deliberately crafted to attack this exposure. This issue affects BIND 9 versions 9.11.0 through 9.11.37, 9.16.0 through 9.16.50, 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, 9.11.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.50-S1, and 9.18.11-S1 through 9.18.32-S1.

Published: 2025-01-29 Last update: 2026-04-15 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-11187 is rated Moderate Risk (61.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 4.18%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-11187

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-28 4.07% 4.18% +0.11%
2 2026-05-23 3.06% 4.07% +1.01%
3 2026-05-22 — 3.06% —

Full EPSS history (33 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-11187

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2024-11187

OS Trackers for CVE-2024-11187

vendor priority summary link
alpine high CVE-2024-11187: 1 source package rows (bind); 6 state rows across 6 repos (3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 6, open 0. https://security.alpinelinux.org/vuln/CVE-2024-11187
debian not yet assigned CVE-2024-11187 not yet assigned priority: Debian including 1 source packages (bind9), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2024-11187
redhat high — https://access.redhat.com/security/cve/CVE-2024-11187
suse high CVE-2024-11187 severity important: SUSE including 381 source package names (5.0.3.7.16.1:bind-utils-9.18.33-150600.3.6.1, 5.1.0.6.40:bind-utils-9.20.9-150700.3.3.1, …), 1093 product×package rows across 271 product lines (Container suse/bind, Container suse/manager/5.0/x86_64/server, … (271 product lines)): Fixed 871, Known Affected 221, Known Not Affected 1. https://www.suse.com/security/cve/CVE-2024-11187/
ubuntu medium CVE-2024-11187 medium priority: Ubuntu including 3 source packages (bind9, bind9-libs, isc-dhcp), 27 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): needs-triage 7, released 7, not-affected 6, DNE 4, ignored 3. https://ubuntu.com/security/CVE-2024-11187

Affected software / configurations for CVE-2024-11187

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2024-11187

cvelogic Threat Intelligence