CVE-2025-2817
published 2025-04-29CVE-2025-2817: Thunderbird's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by manipulating the file-locking behavior. By…
PriorityP354high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.53%
41.5th percentile
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 bypass intended access controls, allowing SYSTEM-level file operations on paths controlled by a non-privileged user and enabling privilege escalation. This vulnerability was fixed in Firefox 138, Firefox ESR 128.10, Firefox ESR 115.23, Thunderbird 138, and Thunderbird 128.10.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | — | — |
| debian | firefox-esr | — | — |
| debian | thunderbird | — | — |
| mozilla | firefox | < 115.23.0 | 115.23.0 |
| mozilla | firefox | < 138.0 | 138.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 116.0 < 128.10.0 | 128.10.0 |
| mozilla | thunderbird | < 128.10.0 | 128.10.0 |
| mozilla | thunderbird | >= 129.0 < 138.0 | 138.0 |
| msrc | cbl2_vim_9.0.0325-1_on_cbl_mariner_2.0 | — | — |
| msrc | cm1_vim_9.0.0360-1_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_debian8.8LOW
vendor_redhat8.8HIGH
vendor_msrc7.8HIGH
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Red Hat
firefox: thunderbird: Privilege escalation in Firefox Updater
vendor_redhat·2025-04-29·CVSS 8.8
CVE-2025-2817 [HIGH] CWE-94 firefox: thunderbird: Privilege escalation in Firefox Updater
firefox: thunderbird: Privilege escalation in Firefox Updater
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 bypass intended access controls, allowing SYSTEM-level file operations on paths controlled by a non-privileged user and enabling privilege escalation. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird < 128.10.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Mozilla Firefox's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by man
Debian
CVE-2025-2817: firefox - Thunderbird's update mechanism allowed a medium-integrity user process to interf...
vendor_debian·2025·CVSS 8.8
CVE-2025-2817 [HIGH] CVE-2025-2817: firefox - Thunderbird's update mechanism allowed a medium-integrity user process to interf...
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 bypass intended access controls, allowing SYSTEM-level file operations on paths controlled by a non-privileged user and enabling privilege escalation. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird < 128.10.
Scope: local
sid: resolved
Microsoft
Use After Free in vim/vim
vendor_msrc·2022-08-09·CVSS 7.8
CVE-2022-2817 [HIGH] CWE-416 Use After Free in vim/vim
Use After Free in vim/vim
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
@huntrdev: @huntrdev
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://learn.microsoft.com/en-us/a
Mozilla
Mozilla Foundation Security Advisory 2025-29: CVE-2025-2817
vendor_mozilla·CVSS 8.8
CVE-2025-2817 [HIGH] Mozilla Foundation Security Advisory 2025-29: CVE-2025-2817
Mozilla Foundation Security Advisory 2025-29
CVE: CVE-2025-2817
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 128.10
Mozilla
Mozilla Foundation Security Advisory 2025-32: CVE-2025-2817
vendor_mozilla·CVSS 8.8
CVE-2025-2817 [HIGH] Mozilla Foundation Security Advisory 2025-32: CVE-2025-2817
Mozilla Foundation Security Advisory 2025-32
CVE: CVE-2025-2817
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 128.10
Mozilla
Mozilla Foundation Security Advisory 2025-28: CVE-2025-2817
vendor_mozilla·CVSS 8.8
CVE-2025-2817 [HIGH] Mozilla Foundation Security Advisory 2025-28: CVE-2025-2817
Mozilla Foundation Security Advisory 2025-28
CVE: CVE-2025-2817
Product: Firefox
Impact: high
Fixed in: Firefox 138
Mozilla
Mozilla Foundation Security Advisory 2025-31: CVE-2025-2817
vendor_mozilla·CVSS 8.8
CVE-2025-2817 [HIGH] Mozilla Foundation Security Advisory 2025-31: CVE-2025-2817
Mozilla Foundation Security Advisory 2025-31
CVE: CVE-2025-2817
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 138
Mozilla
Mozilla Foundation Security Advisory 2025-30: CVE-2025-2817
vendor_mozilla·CVSS 8.8
CVE-2025-2817 [HIGH] Mozilla Foundation Security Advisory 2025-30: CVE-2025-2817
Mozilla Foundation Security Advisory 2025-30
CVE: CVE-2025-2817
Product: Firefox ESR
Impact: moderate
Fixed in: Firefox ESR 115.23
OSV
CVE-2025-2817: Mozilla Firefox's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by manipulating the file-locking
osv·2025-04-29·CVSS 8.8
CVE-2025-2817 [HIGH] CVE-2025-2817: Mozilla Firefox's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by manipulating the file-locking
Mozilla Firefox'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 bypass intended access controls, allowing SYSTEM-level file operations on paths controlled by a non-privileged user and enabling privilege escalation. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird ESR < 128.10.
GHSA
GHSA-j657-7g4v-wv6h: Mozilla Firefox's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by manipulating the file-locking
ghsa_unreviewed·2025-04-29
CVE-2025-2817 [HIGH] CWE-22 GHSA-j657-7g4v-wv6h: Mozilla Firefox's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by manipulating the file-locking
Mozilla Firefox'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 bypass intended access controls, allowing SYSTEM-level file operations on paths controlled by a non-privileged user and enabling privilege escalation. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird ESR < 128.10.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.mozilla.org/show_bug.cgi?id=1917536https://www.mozilla.org/security/advisories/mfsa2025-28/https://www.mozilla.org/security/advisories/mfsa2025-29/https://www.mozilla.org/security/advisories/mfsa2025-30/https://www.mozilla.org/security/advisories/mfsa2025-31/https://www.mozilla.org/security/advisories/mfsa2025-32/https://lists.debian.org/debian-lts-announce/2025/05/msg00022.html
2025-04-29
Published