VDB-378295 · CVE-2026-15718 · Nessus 327187

Mozilla Firefox up to 152.0.5 Remote Code Execution

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.0	$5k-$25k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Mozilla Firefox up to 152.0.5. Impacted is an unknown function. This manipulation causes Remote Code Execution. This vulnerability is registered as CVE-2026-15718. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 152.0.5. It has been declared as critical. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a remote code execution vulnerability. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

We are aware that exploit code for this is public however we are not aware of any attacks in the wild abusing this flaw. This vulnerability was fixed in Firefox 152.0.6.

It is possible to read the advisory at bugzilla.mozilla.org. This vulnerability is known as CVE-2026-15718 since 07/14/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. 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 07/24/2026).

The vulnerability scanner Nessus provides a plugin with the ID 327187 (Linux Distros Unpatched Vulnerability : CVE-2026-15718), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 152.0.6 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (327187) and CERT Bund (WID-SEC-2026-2340). Be aware that VulDB is the high quality source for vulnerability data.

Affected

Debian Linux
SUSE Linux
SUSE openSUSE
Mozilla Firefox

Productinfo

Type

Web Browser

Vendor

Mozilla

Name

Firefox

Version

License

open-source

Website

Vendor: https://www.mozilla.org/
Product: https://www.mozilla.org/en-US/firefox/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Remote Code Execution
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

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: 327187
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-15718

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Firefox 152.0.6

Timelineinfo

07/14/2026 Advisory disclosed
07/14/2026 +0 days CVE reserved
07/14/2026 +0 days VulDB entry created
07/24/2026 +10 days VulDB entry last update

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: bugzilla.mozilla.org
Status: Confirmed

CVE: CVE-2026-15718 (🔒)
GCVE (CVE): GCVE-0-2026-15718
GCVE (VulDB): GCVE-100-378295
CERT Bund: WID-SEC-2026-2340 - Mozilla Firefox: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff

Entryinfo

Created: 07/14/2026 14:57
Updated: 07/24/2026 11:05
Changes: 07/14/2026 14:57 (52), 07/15/2026 11:30 (7), 07/16/2026 12:49 (2), 07/24/2026 11:05 (4)
Complete: 🔍
Cache ID: 216::103