Mozilla: >> Firefox >> 121.0 Security Vulnerabilities
A malicious devtools extension could have been used to escalate privileges. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
CVSS Score
8.8
EPSS Score
0.003
Published
2024-01-23
A use-after-free crash could have occurred on macOS if a Firefox update were being applied on a very busy system. This could have resulted in an exploitable crash. This vulnerability affects Firefox < 122.
CVSS Score
6.5
EPSS Score
0.001
Published
2024-01-23
In specific HSTS configurations an attacker could have bypassed HSTS on a subdomain. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
CVSS Score
6.5
EPSS Score
0.002
Published
2024-01-23
Some WASM source files could have caused a crash when loaded in devtools. This vulnerability affects Firefox < 122.
CVSS Score
6.5
EPSS Score
0.002
Published
2024-01-23
Memory safety bugs present in Firefox 121, Firefox ESR 115.6, and Thunderbird 115.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
CVSS Score
8.8
EPSS Score
0.007
Published
2024-01-23
The HTTP/2 protocol does not consider the role of the TCP congestion window in providing information about content length, which makes it easier for remote attackers to obtain cleartext data by leveraging a web-browser configuration in which third-party cookies are sent, aka a "HEIST" attack.
CVSS Score
5.3
EPSS Score
0.039
Published
2016-09-06
The HTTPS protocol does not consider the role of the TCP congestion window in providing information about content length, which makes it easier for remote attackers to obtain cleartext data by leveraging a web-browser configuration in which third-party cookies are sent, aka a "HEIST" attack.
CVSS Score
5.3
EPSS Score
0.039
Published
2016-09-06
Cross-site scripting (XSS) vulnerability in clickstream.js in Y! Toolbar plugin for FireFox 3.1.0.20130813024103 for Mac, and 2.5.9.2013418100420 for Windows, allows remote attackers to inject arbitrary web script or HTML via a crafted URL that is stored by the victim.
CVSS Score
4.3
EPSS Score
0.003
Published
2014-01-26
Unspecified vulnerability in Oracle Java SE 6u65 and Java SE 7u45, when running on Firefox, allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors related to Deployment.
CVSS Score
7.6
EPSS Score
0.07
Published
2014-01-15
Cross-site scripting (XSS) vulnerability in the bulletin-board component in Cybozu Garoon before 3.7.2, when Internet Explorer or Firefox is used, allows remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.
CVSS Score
3.5
EPSS Score
0.002
Published
2013-12-05