CVE-2026-16411
published 2026-07-21CVE-2026-16411: Memory safety bugs present in Firefox 152. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could…
PriorityP350critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.32%
23.8th percentile
Memory safety bugs present in Firefox 152. 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 was fixed in Firefox 153 and Thunderbird 153.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 153 | Firefox 153 |
| mozilla | firefox | < 153.0.0 | 153.0.0 |
| mozilla | thunderbird | < Thunderbird 153 | Thunderbird 153 |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_redhat9.8CRITICAL
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Red Hat
firefox: thunderbird: Memory safety bugs fixed in Firefox 153
vendor_redhat·2026-07-21·CVSS 9.8
CVE-2026-16411 [CRITICAL] CWE-825 firefox: thunderbird: Memory safety bugs fixed in Firefox 153
firefox: thunderbird: Memory safety bugs fixed in Firefox 153
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Memory safety bugs present in Thunderbird 152. 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.
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/thunderbird-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: thunderbird (Red Hat Enterprise Linux 10) - Not affe
Mozilla
Mozilla Foundation Security Advisory 2026-71: CVE-2026-16411
vendor_mozilla
CVE-2026-16411 Mozilla Foundation Security Advisory 2026-71: CVE-2026-16411
Mozilla Foundation Security Advisory 2026-71
CVE: CVE-2026-16411
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 153
Mozilla
Mozilla Foundation Security Advisory 2026-68: CVE-2026-16411
vendor_mozilla·CVSS 9.8
CVE-2026-16411 [CRITICAL] Mozilla Foundation Security Advisory 2026-68: CVE-2026-16411
Mozilla Foundation Security Advisory 2026-68
CVE: CVE-2026-16411
Product: Firefox
Impact: high
Fixed in: Firefox 153
GHSA
Memory safety bugs present in Firefox 152.
ghsa_unreviewed·2026-07-21
CVE-2026-16411 [CRITICAL] CWE-119 Memory safety bugs present in Firefox 152.
Memory safety bugs present in Firefox 152. 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 was fixed in Firefox 153.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-16411 firefox: thunderbird: Memory safety bugs fixed in Firefox 153
bugzilla·2026-07-21·CVSS 9.8
CVE-2026-16411 [CRITICAL] CVE-2026-16411 firefox: thunderbird: Memory safety bugs fixed in Firefox 153
CVE-2026-16411 firefox: thunderbird: Memory safety bugs fixed in Firefox 153
Memory safety bugs present in Firefox 152. 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 was fixed in Firefox 153.
Hackernews
⚡ Weekly Recap: Rogue AI Agents, Check Point Exploit, Slopsquatting, ClickFix Lures and More
blogs_hackernews·2026-07-27
CVE-2026-16232 ⚡ Weekly Recap: Rogue AI Agents, Check Point Exploit, Slopsquatting, ClickFix Lures and More
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## ⚡ Weekly Recap: Rogue AI Agents, Check Point Exploit, Slopsquatting, ClickFix Lures and More
Monday starts with the usual promise that everything is under control. Then the logs wake up.
This week, trusted tools crossed lines, old flaws found new work, exposed systems stayed exposed, and attackers kept hiding inside normal-looking services. Nothing looked strange at first. That helped.
That is the mood. Here is the full recap.
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https://bugzilla.mozilla.org/buglist.cgi?bug_id=1420800%2C1598946%2C1767921%2C2013993%2C2025417%2C2027325%2C2027364%2C2029433%2C2029807%2C2029901%2C2029922%2C2030102%2C2030563%2C2032110%2C2037801%2C2042756%2C2044625%2C2045609%2C2047920%2C2048491%2C2048492%2C2048800%2C2050534%2C2050662%2C2050871https://bugzilla.mozilla.org/buglist.cgi?bug_id=2006467%2C2027346%2C2027349%2C2027353%2C2027362%2C2027371%2C2027373%2C2028954%2C2029694%2C2036906%2C2038964%2C2039460%2C2040522%2C2040834%2C2043275%2C2045394%2C2045606%2C2052060https://bugzilla.mozilla.org/buglist.cgi?bug_id=2048936%2C2049804https://www.mozilla.org/security/advisories/mfsa2026-68/https://www.mozilla.org/security/advisories/mfsa2026-71/
2026-07-21
Published