Apache HTTP Server up to 2.4.66 null termination

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$5k-$25k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Apache HTTP Server up to 2.4.66. Impacted is an unknown function. The manipulation leads to null termination. This vulnerability is traded as CVE-2026-34032. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apache HTTP Server up to 2.4.66 and classified as critical. This issue affects an unknown code. The manipulation with an unknown input leads to a null termination vulnerability. Using CWE to declare the problem leads to CWE-170. The product does not terminate or incorrectly terminates a string or array with a null character or equivalent terminator. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Improper Null Termination, Out-of-bounds Read vulnerability in Apache HTTP Server. This issue affects Apache HTTP Server: through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.

The weakness was shared by tianshuo han. It is possible to read the advisory at httpd.apache.org. The identification of this vulnerability is CVE-2026-34032 since 03/25/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/13/2026).

The vulnerability scanner Nessus provides a plugin with the ID 312249 (FreeBSD : www/apache24 -- Multiple vulnerabilities (1ccc383b-486a-11f1-8b62-8447094a420f)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.4.67 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (312249) and CERT Bund (WID-SEC-2026-1354). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Debian Linux
  • Red Hat Enterprise Linux
  • Fedora Linux
  • Ubuntu Linux
  • IBM HTTP Server
  • Microsoft Azure Linux
  • Apache HTTP Server

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null termination
CWE: CWE-170 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 312249
Nessus Name: FreeBSD : www/apache24 -- Multiple vulnerabilities (1ccc383b-486a-11f1-8b62-8447094a420f)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: HTTP Server 2.4.67

Timelineinfo

03/25/2026 CVE reserved
05/04/2026 +39 days Advisory disclosed
05/04/2026 +0 days VulDB entry created
05/13/2026 +9 days VulDB entry last update

Sourcesinfo

Vendor: apache.org

Advisory: httpd.apache.org
Researcher: tianshuo han
Status: Confirmed

CVE: CVE-2026-34032 (🔒)
GCVE (CVE): GCVE-0-2026-34032
GCVE (VulDB): GCVE-100-360959
CERT Bund: WID-SEC-2026-1354 - Apache HTTP Server: Mehrere Schwachstellen

Entryinfo

Created: 05/04/2026 15:41
Updated: 05/13/2026 12:13
Changes: 05/04/2026 15:41 (56), 05/05/2026 12:16 (7), 05/06/2026 03:49 (2), 05/13/2026 12:13 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

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