CVE-2026-46729

Apache HTTP Server: mod_heartmonitor denial of service

HIGH

7.5

CVSS Score

Published: October 1, 2026 at 03:55 PM UTC

Updated: October 8, 2026 at 12:47 AM UTC

1 product affected across 1 vendorHTTP Server

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Severity

HIGH7.5

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

Description

NULL Pointer Dereference vulnerability in Apache HTTP Servers mod_heartmonitor over unicast listener. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

Affected

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

HTTP Server · Apache

95%

2.4.0 ≤ v ≤ 2.4.682.4.0 ≤ v < 2.4.692.4.0

Affected range stops below 2.4.69, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

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

Patch and advisory references

https://httpd.apache.org/security/vulnerabilities_24.html

References (2)

Vendor Advisory

Source: cverecord

https://httpd.apache.org/security/vulnerabilities_24.html

Mailing ListThird Party Advisory

Source: af854a3a-2127-422b-91ae-364da2661108

http://www.openwall.com/lists/oss-security/2026/10/01/13

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

7.5HIGHCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-476

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