Mozilla Firefox up to 62.x memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability has been found in Mozilla Firefox up to 62.x and classified as critical. This vulnerability affects unknown code. The manipulation leads to memory corruption. This vulnerability is referenced as CVE-2018-12390. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Mozilla Firefox up to 62.x (Web Browser). This issue affects an unknown part. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability.

The bug was discovered 10/23/2018. The weakness was published 10/23/2018 as MFSA 2018-26 as confirmed security advisory (Website). It is possible to read the advisory at mozilla.org. The identification of this vulnerability is CVE-2018-12390 since 06/14/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. 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 $0-$5k at the moment (estimation calculated on 11/26/2025).

The vulnerability scanner Nessus provides a plugin with the ID 118406 (CentOS 6 : firefox (CESA-2018:3006)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197286 (Ubuntu Security Notification for Firefox Vulnerabilities (USN-3801-1)).

Upgrading to version 63.0 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (118406), SecurityFocus (BID 105723†) and SecurityTracker (ID 1041944†). Similar entries are available at VDB-125961, VDB-125962, VDB-125963 and VDB-125964. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

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

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: 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: 118406
Nessus Name: CentOS 6 : firefox (CESA-2018:3006)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Firefox 63.0

Timelineinfo

06/14/2018 🔍
10/23/2018 +130 days 🔍
10/23/2018 +0 days 🔍
10/23/2018 +0 days 🔍
10/23/2018 +0 days 🔍
10/24/2018 +0 days 🔍
10/26/2018 +2 days 🔍
10/26/2018 +0 days 🔍
11/26/2025 +2588 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2018-26
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-12390 (🔍)
GCVE (CVE): GCVE-0-2018-12390
GCVE (VulDB): GCVE-100-125975

OVAL: 🔍

SecurityFocus: 105723 - Mozilla Firefox ESR CVE-2018-12389 Multiple Memory Corruption Vulnerabilities
SecurityTracker: 1041944

See also: 🔍

Entryinfo

Created: 10/26/2018 07:13
Updated: 11/26/2025 08:54
Changes: 10/26/2018 07:13 (70), 04/06/2020 18:38 (13), 06/03/2023 08:39 (4), 11/26/2025 08:54 (16)
Complete: 🔍
Cache ID: 216::103

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

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