← Back

Firefox

firefox

Vendor: Mozilla • 3,269 CVEs

CVEs (3,269)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
2Mozilla
Oracle
2Firefox
Linux
May 6, 2026
Aug 5, 2016
N/A· v4
8.8 HIGH· v3
6.8 MEDIUM· v2
Use-after-free vulnerability in the CanonicalizeXPCOMParticipant function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via a script that closes its own...Show more
Use-after-free vulnerability in the CanonicalizeXPCOMParticipant function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via a script that closes its own Service Worker within a nested sync event loop.Show less
2Mozilla
Oracle
2Firefox
Linux
May 6, 2026
Aug 5, 2016
N/A· v4
8.8 HIGH· v3
6.8 MEDIUM· v2
Use-after-free vulnerability in the WebRTC socket thread in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code by leveraging incorrect free operations on DTLS o...Show more
Use-after-free vulnerability in the WebRTC socket thread in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code by leveraging incorrect free operations on DTLS objects during the shutdown of a WebRTC session.Show less
1Mozilla
1Firefox
May 6, 2026
Aug 5, 2016
N/A· v4
8.8 HIGH· v3
6.8 MEDIUM· v2
Use-after-free vulnerability in the js::PreliminaryObjectArray::sweep function in Mozilla Firefox before 48.0 allows remote attackers to execute arbitrary code via crafted JavaScript that is mishandled during incremental...Show more
Use-after-free vulnerability in the js::PreliminaryObjectArray::sweep function in Mozilla Firefox before 48.0 allows remote attackers to execute arbitrary code via crafted JavaScript that is mishandled during incremental garbage collection.Show less
2Mozilla
Oracle
2Firefox
Linux
May 6, 2026
Aug 5, 2016
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
Use-after-free vulnerability in the nsXULPopupManager::KeyDown function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows attackers to execute arbitrary code or cause a denial of service (heap memory...Show more
Use-after-free vulnerability in the nsXULPopupManager::KeyDown function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows attackers to execute arbitrary code or cause a denial of service (heap memory corruption and application crash) by leveraging keyboard access to use the Alt key during selection of top-level menu items.Show less
1Mozilla
1Firefox
May 6, 2026
Aug 5, 2016
N/A· v4
4.7 MEDIUM· v3
4.7 MEDIUM· v2
The Updater in Mozilla Firefox before 48.0 on Windows allows local users to write to arbitrary files via vectors involving the callback application-path parameter and a hard link.
2Mozilla
Oracle
2Firefox
Linux
May 6, 2026
Aug 5, 2016
N/A· v4
8.8 HIGH· v3
6.8 MEDIUM· v2
Stack-based buffer underflow in the mozilla::gfx::BasePoint4d function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via crafted two-dimensional graphic...Show more
Stack-based buffer underflow in the mozilla::gfx::BasePoint4d function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via crafted two-dimensional graphics data that is mishandled during clipping-region calculations.Show less
1Mozilla
1Firefox
May 6, 2026
Aug 5, 2016
N/A· v4
4.3 MEDIUM· v3
4.3 MEDIUM· v2
Mozilla Firefox before 48.0 allows remote attackers to spoof the location bar via crafted characters in the media type of a data: URL.
1Mozilla
1Firefox
May 6, 2026
Aug 5, 2016
N/A· v4
4.3 MEDIUM· v3
5.0 MEDIUM· v2
Mozilla Firefox before 48.0, Firefox ESR < 45.4 and Thunderbird < 45.4 allow remote attackers to obtain sensitive information about the previously retrieved page via Resource Timing API calls.
1Mozilla
1Firefox
May 6, 2026
Aug 5, 2016
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 on Linux make cairo _cairo_surface_get_extents calls that do not properly interact with libav header allocation in FFmpeg 0.10, which allows remote attackers t...Show more
Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 on Linux make cairo _cairo_surface_get_extents calls that do not properly interact with libav header allocation in FFmpeg 0.10, which allows remote attackers to cause a denial of service (application crash) via a crafted video.Show less
1Mozilla
1Firefox
May 6, 2026
Aug 5, 2016
N/A· v4
8.8 HIGH· v3
6.8 MEDIUM· v2
Heap-based buffer overflow in the nsBidi::BracketData::AddOpening function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via directional content in an S...Show more
Heap-based buffer overflow in the nsBidi::BracketData::AddOpening function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via directional content in an SVG document.Show less
2Mozilla
Oracle
2Firefox
Linux
May 6, 2026
Aug 5, 2016
N/A· v4
6.3 MEDIUM· v3
6.8 MEDIUM· v2
Heap-based buffer overflow in the ClearKey Content Decryption Module (CDM) in the Encrypted Media Extensions (EME) API in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 might allow remote attackers to execu...Show more
Heap-based buffer overflow in the ClearKey Content Decryption Module (CDM) in the Encrypted Media Extensions (EME) API in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 might allow remote attackers to execute arbitrary code by providing a malformed video and leveraging a Gecko Media Plugin (GMP) sandbox bypass.Show less
1Mozilla
1Firefox
May 6, 2026
Aug 5, 2016
N/A· v4
8.8 HIGH· v3
6.8 MEDIUM· v2
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allow remote attackers to cause a denial of service (memory corruption and application crash) or...Show more
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors related to Http2Session::Shutdown and SpdySession31::Shutdown, and other vectors.Show less
1Mozilla
1Firefox
May 6, 2026
Aug 5, 2016
N/A· v4
8.8 HIGH· v3
6.8 MEDIUM· v2
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 48.0 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code v...Show more
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 48.0 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.Show less
1Mozilla
1Firefox
May 6, 2026
Aug 5, 2016
N/A· v4
4.3 MEDIUM· v3
4.3 MEDIUM· v2
Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 preserve the network connection used for favicon resource retrieval after the associated browser window is closed, which makes it easier for remote web servers...Show more
Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 preserve the network connection used for favicon resource retrieval after the associated browser window is closed, which makes it easier for remote web servers to track users by observing network traffic from multiple IP addresses.Show less
4Canonical
MozillaNovell+1 more
8Firefox
LeapNetwork Security Services+5 more
May 6, 2026
Jun 13, 2016
N/A· v4
8.8 HIGH· v3
9.3 HIGH· v2
Mozilla Network Security Services (NSS) before 3.23, as used in Mozilla Firefox before 47.0, allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified oth...Show more
Mozilla Network Security Services (NSS) before 3.23, as used in Mozilla Firefox before 47.0, allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via unknown vectors.Show less
3Canonical
MozillaOpensuse
4Firefox
LeapOpensuse+1 more
May 6, 2026
Jun 13, 2016
N/A· v4
6.1 MEDIUM· v3
4.3 MEDIUM· v2
Mozilla Firefox before 47.0 ignores Content Security Policy (CSP) directives for cross-domain Java applets, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted applet.
3Canonical
MozillaOpensuse
4Firefox
LeapOpensuse+1 more
May 6, 2026
Jun 13, 2016
N/A· v4
4.3 MEDIUM· v3
4.3 MEDIUM· v2
Mozilla Firefox before 47.0 allows remote attackers to discover the list of disabled plugins via a fingerprinting attack involving Cascading Style Sheets (CSS) pseudo-classes.
4Canonical
DebianMozilla+1 more
5Debian Linux
FirefoxLeap+2 more
May 6, 2026
Jun 13, 2016
N/A· v4
8.8 HIGH· v3
5.8 MEDIUM· v2
Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2 do not ensure that the user approves the fullscreen and pointerlock settings, which allows remote attackers to cause a denial of service (UI outage), or conduc...Show more
Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2 do not ensure that the user approves the fullscreen and pointerlock settings, which allows remote attackers to cause a denial of service (UI outage), or conduct clickjacking or spoofing attacks, via a crafted web site.Show less
3Canonical
MozillaOpensuse
4Firefox
LeapOpensuse+1 more
May 6, 2026
Jun 13, 2016
N/A· v4
6.5 MEDIUM· v3
4.3 MEDIUM· v2
Mozilla Firefox before 47.0 allows remote attackers to spoof permission notifications via a crafted web site that rapidly triggers permission requests, as demonstrated by the microphone permission or the geolocation perm...Show more
Mozilla Firefox before 47.0 allows remote attackers to spoof permission notifications via a crafted web site that rapidly triggers permission requests, as demonstrated by the microphone permission or the geolocation permission.Show less
4Canonical
DebianMozilla+1 more
5Debian Linux
FirefoxLeap+2 more
May 6, 2026
Jun 13, 2016
N/A· v4
8.8 HIGH· v3
6.8 MEDIUM· v2
Use-after-free vulnerability in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2 allows remote attackers to execute arbitrary code via WebGL content that triggers texture access after destruction of the textu...Show more
Use-after-free vulnerability in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2 allows remote attackers to execute arbitrary code via WebGL content that triggers texture access after destruction of the texture's recycle pool.Show less