VDB-352784 · CVE-2026-27784 · K000160364

F5 NGINX Open Source ngx_http_mp4_module integer overflow

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6.9	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in F5 NGINX Open Source. This vulnerability affects the function ngx_http_mp4_module. Such manipulation leads to integer overflow. This vulnerability is traded as CVE-2026-27784. An attack has to be approached locally. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in F5 NGINX Open Source (unknown version). Affected by this issue is the function ngx_http_mp4_module. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The 32-bit implementation of NGINX Open Source has a vulnerability in the ngx_http_mp4_module module, which might allow an attacker to over-read or over-write NGINX worker memory resulting in its termination, using a specially crafted MP4 file. The issue only affects 32-bit NGINX Open Source if it is built with the ngx_http_mp4_module module and the mp4 directive is used in the configuration file. Additionally, the attack is possible only if an attacker can trigger the processing of a specially crafted MP4 file with the ngx_http_mp4_module module. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

The advisory is shared for download at my.f5.com. This vulnerability is handled as CVE-2026-27784 since 03/18/2026. The exploitation is known to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 305646 (Oracle Linux 9 : nginx:1.24 (ELSA-2026-6923)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (305646) and CERT Bund (WID-SEC-2026-0860). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

Debian Linux
Amazon Linux 2
Red Hat Enterprise Linux
Fedora Linux
SUSE Linux
Oracle Linux
SUSE openSUSE
RESF Rocky Linux
NGINX NGINX Plus
NGINX NGINX

Productinfo

Type

Web Server

Vendor

Name

NGINX Open Source

License

commercial

Website

Vendor: https://f5.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CNA Base Score: 7.8
CNA Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 305646
Nessus Name: Oracle Linux 9 : nginx:1.24 (ELSA-2026-6923)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/18/2026 CVE reserved
03/24/2026 +6 days Advisory disclosed
03/24/2026 +0 days VulDB entry created
05/20/2026 +57 days VulDB entry last update

Sourcesinfo

Vendor: f5.com

Advisory: K000160364
Status: Confirmed

CVE: CVE-2026-27784 (🔒)
GCVE (CVE): GCVE-0-2026-27784
GCVE (VulDB): GCVE-100-352784
CERT Bund: WID-SEC-2026-0860 - NGINX und NGINX Plus: Mehrere Schwachstellen

Entryinfo

Created: 03/24/2026 16:08
Updated: 05/20/2026 11:32
Changes: 03/24/2026 16:08 (74), 03/29/2026 03:05 (1), 03/30/2026 16:49 (11), 04/09/2026 09:44 (2), 04/14/2026 04:06 (7), 05/20/2026 11:32 (1)
Complete: 🔍
Cache ID: 216::103

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