---
title: "CVE-2026-63292: Apache HTTP Server - Buffer Overflow"
description: "Apache HTTP Server through 2.4.68 contains a stack-based buffer overflow caused by an HTTP Host header exceeding 8192 bytes when VirtualDocumentRoot uses a hostname format specifier and LimitRequestFieldSize is raised, letting remote clients cause denial of service or execute arbitrary code."
url: https://panop.io/threat-heartbeat/CVE-2026-63292/
---

# CVE-2026-63292 Apache HTTP Server - Buffer Overflow

Apache HTTP Server through 2.4.68 contains a stack-based buffer overflow caused by an HTTP Host header exceeding 8192 bytes when VirtualDocumentRoot uses a hostname format specifier and LimitRequestFieldSize is raised, letting remote clients cause denial of service or execute arbitrary code.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

Proof of concept available

Authentication

Not required

EPSS

0.88% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-63292)

## Details

Type

Buffer Overflow

Impact

Remote Code Execution, Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Published

1 October 2026

Updated

15 October 2026

Weakness

[CWE-121](https://cwe.mitre.org/data/definitions/121.html)

## Vendor fix

Upgrade to version 2.4.69.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-63292](https://nvd.nist.gov/vuln/detail/CVE-2026-63292)
- [https://httpd.apache.org/security/vulnerabilities\_24.html](https://httpd.apache.org/security/vulnerabilities_24.html)
- [http://www.openwall.com/lists/oss-security/2026/10/01/24](http://www.openwall.com/lists/oss-security/2026/10/01/24)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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