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CVE-2025-2817

Medium priority
Not affected

Thunderbird's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by manipulating the file-locking behavior. By injecting code into the user-privileged process, an attacker could...

2 affected packages

firefox, thunderbird

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
thunderbird Not affected Not affected Not in release
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CVE-2025-27426

Medium priority
Not affected

Malicious websites utilizing a server-side redirect to an internal error page could result in a spoofed website URL This vulnerability affects Firefox for iOS < 136.

2 affected packages

firefox, thunderbird

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
thunderbird Not affected Not affected Not in release
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CVE-2025-27425

Medium priority
Not affected

Scanning certain QR codes that included text with a website URL could allow the URL to be opened without presenting the user with a confirmation alert first This vulnerability affects Firefox for iOS < 136.

2 affected packages

firefox, thunderbird

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
thunderbird Not affected Not affected Not in release
Show less packages

CVE-2025-27424

Medium priority
Not affected

Websites redirecting to a non-HTTP scheme URL could allow a website address to be spoofed for a malicious page This vulnerability affects Firefox for iOS < 136.

2 affected packages

firefox, thunderbird

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
thunderbird Not affected Not affected Not in release
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CVE-2025-26696

Medium priority
Fixed

Certain crafted MIME email messages that claimed to contain an encrypted OpenPGP message, which instead contained an OpenPGP signed message, were wrongly shown as being encrypted. This vulnerability affects Thunderbird < 136 and...

1 affected package

thunderbird

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
thunderbird Not affected Fixed Not in release
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CVE-2025-26695

Medium priority
Fixed

When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the requested email address. This vulnerability affects Thunderbird < 136 and Thunderbird < 128.8.

1 affected package

thunderbird

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
thunderbird Not affected Fixed Not in release
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CVE-2025-23109

Medium priority
Not affected

Long hostnames in URLs could be leveraged to obscure the actual host of the website or spoof the website address This vulnerability affects Firefox for iOS < 134.

2 affected packages

firefox, thunderbird

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
thunderbird Not affected Not affected Not in release
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CVE-2025-23108

Medium priority
Not affected

Opening Javascript links in a new tab via long-press in the Firefox iOS client could result in a malicious script spoofing the URL of the new tab. This vulnerability affects Firefox for iOS < 134.

2 affected packages

firefox, thunderbird

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Not in release
thunderbird Not affected Not affected Not in release
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CVE-2025-1943

Medium priority

Some fixes available 1 of 12

Memory safety bugs present in Firefox 135 and Thunderbird 135. 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...

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Fixed
thunderbird Not affected Not affected Not in release
mozjs38 Not in release Not in release Not in release Needs evaluation
mozjs52 Not in release Not in release Needs evaluation Ignored
mozjs68 Not in release Not in release Ignored
mozjs78 Not in release Ignored Not in release
mozjs91 Not in release Ignored Not in release
mozjs102 Ignored Ignored Not in release
mozjs115 Ignored Not in release Not in release
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CVE-2025-1942

Medium priority

Some fixes available 1 of 12

When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string This vulnerability affects Firefox < 136 and Thunderbird < 136.

9 affected packages

firefox, thunderbird, mozjs38, mozjs52, mozjs68...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
firefox Not affected Not affected Fixed
thunderbird Not affected Not affected Not in release
mozjs38 Not in release Not in release Not in release Needs evaluation
mozjs52 Not in release Not in release Needs evaluation Ignored
mozjs68 Not in release Not in release Ignored
mozjs78 Not in release Ignored Not in release
mozjs91 Not in release Ignored Not in release
mozjs102 Ignored Ignored Not in release
mozjs115 Ignored Not in release Not in release
Show all 9 packages Show less packages