CVE-2024-12705 | DNS-over-HTTPS implementation suffers from multiple issues under heavy query load

Clients using DNS-over-HTTPS (DoH) can exhaust a DNS resolver's CPU and/or memory by flooding it with crafted valid or invalid HTTP/2 traffic. This issue affects BIND 9 versions 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, 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-2024-12705 is rated High Risk (65.4/100): CVSS High severity, with high exploitation likelihood (EPSS 8.62%, 93th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +3.00% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize 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-2024-12705

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 2026-06-10 5.62% 8.62% +3.00%
2 2026-05-07 7.42% 5.62% -1.80%
3 2026-04-24 — 7.42% —

Full EPSS history (23 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-12705

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-2024-12705

OS Trackers for CVE-2024-12705

vendor priority summary link
alpine — CVE-2024-12705: 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-2024-12705
debian unimportant CVE-2024-12705 unimportant 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-2024-12705
redhat high — https://access.redhat.com/security/cve/CVE-2024-12705
suse high CVE-2024-12705 severity important: SUSE including 290 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, …), 541 product×package rows across 135 product lines (Container suse/bind, Container suse/manager/5.0/x86_64/server, … (135 product lines)): Known Affected 231, Known Not Affected 183, Fixed 127. https://www.suse.com/security/cve/CVE-2024-12705/
ubuntu medium CVE-2024-12705 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, not-affected 7, released 7, DNE 4, ignored 2. https://ubuntu.com/security/CVE-2024-12705

Affected software / configurations for CVE-2024-12705

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2024-12705

cvelogic Threat Intelligence