CVE-2024-4076

Assertion failure when serving both stale cache data and authoritative zone content

HIGH
7.5
CVSS Score
Published: July 23, 2024 at 02:40 PM UTC
Updated: June 17, 2026 at 08:01 AM UTC
1 product affected across 1 vendorBIND

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Severity
HIGH7.5
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

Client queries that trigger serving stale data and that also require lookups in local authoritative zone data may result in an assertion failure. This issue affects BIND 9 versions 9.16.13 through 9.16.50, 9.18.0 through 9.18.27, 9.19.0 through 9.19.24, 9.11.33-S1 through 9.11.37-S1, 9.16.13-S1 through 9.16.50-S1, and 9.18.11-S1 through 9.18.27-S1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

9.11.33-S1 ≤ v ≤ 9.11.37-S19.16.13 ≤ v ≤ 9.16.509.16.13-s1 ≤ v ≤ 9.16.50-s19.18.0 ≤ v ≤ 9.18.279.18.11-S1 ≤ v ≤ 9.18.27-S19.19.0 ≤ v ≤ 9.19.249.11.33-S19.11.33-s19.16.139.16.13-S19.16.13-s19.18.09.18.11-S19.18.11-s19.19.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHisc
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-617

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