CVE-2026-16360
published 2026-07-21CVE-2026-16360: Memory safety bugs present in Firefox ESR 115.37, Firefox ESR 140.12 and Firefox 152. Some of these bugs showed evidence of memory corruption and we presume…
PriorityP355critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.33%
25.0th percentile
Memory safety bugs present in Firefox ESR 115.37, Firefox ESR 140.12 and 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, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 153 | Firefox 153 |
| mozilla | firefox | < 115.38.0 | 115.38.0 |
| mozilla | firefox | < 153.0.0 | 153.0.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 128.1.0 < 140.13.0 | 140.13.0 |
| mozilla | firefox_esr | < Firefox ESR 140.13 | Firefox ESR 140.13 |
| mozilla | firefox_esr | < Firefox ESR 115.38 | Firefox ESR 115.38 |
| mozilla | thunderbird | < Thunderbird 153 | Thunderbird 153 |
| mozilla | thunderbird | < Thunderbird 140.13 | Thunderbird 140.13 |
| mozilla | thunderbird | < 140.13.0 | 140.13.0 |
| mozilla | thunderbird | — | — |
| mozilla | thunderbird | >= 141.0 < 153.0 | 153.0 |
| rhel10 | firefox-flatpak | — | — |
| rhel10 | thunderbird-flatpak | — | — |
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 ESR 115.38, Firefox ESR 140.13 and Firefox 153
vendor_redhat·2026-07-21·CVSS 9.8
CVE-2026-16360 [CRITICAL] CWE-120 firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38, Firefox ESR 140.13 and Firefox 153
firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38, Firefox ESR 140.13 and 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 ESR 140.12 and 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) - Affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Affected
Package: rhel10/thunderbird-flatpak (Red Hat Enterprise Linux 10) - Affected
Pac
Mozilla
Mozilla Foundation Security Advisory 2026-71: CVE-2026-16360
vendor_mozilla
CVE-2026-16360 Mozilla Foundation Security Advisory 2026-71: CVE-2026-16360
Mozilla Foundation Security Advisory 2026-71
CVE: CVE-2026-16360
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 153
Mozilla
Mozilla Foundation Security Advisory 2026-70: CVE-2026-16360
vendor_mozilla
CVE-2026-16360 Mozilla Foundation Security Advisory 2026-70: CVE-2026-16360
Mozilla Foundation Security Advisory 2026-70
CVE: CVE-2026-16360
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 140.13
Mozilla
Mozilla Foundation Security Advisory 2026-68: CVE-2026-16360
vendor_mozilla
CVE-2026-16360 Mozilla Foundation Security Advisory 2026-68: CVE-2026-16360
Mozilla Foundation Security Advisory 2026-68
CVE: CVE-2026-16360
Product: Firefox
Impact: high
Fixed in: Firefox 153
Mozilla
Mozilla Foundation Security Advisory 2026-69: CVE-2026-16360
vendor_mozilla
CVE-2026-16360 Mozilla Foundation Security Advisory 2026-69: CVE-2026-16360
Mozilla Foundation Security Advisory 2026-69
CVE: CVE-2026-16360
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 115.38
Mozilla
Mozilla Foundation Security Advisory 2026-72: CVE-2026-16360
vendor_mozilla
CVE-2026-16360 Mozilla Foundation Security Advisory 2026-72: CVE-2026-16360
Mozilla Foundation Security Advisory 2026-72
CVE: CVE-2026-16360
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 140.13
GHSA
Memory safety bugs present in Firefox ESR 115.37, Firefox ESR 140.12 and Firefox 152.
ghsa_unreviewed·2026-07-21
CVE-2026-16360 [CRITICAL] CWE-119 Memory safety bugs present in Firefox ESR 115.37, Firefox ESR 140.12 and Firefox 152.
Memory safety bugs present in Firefox ESR 115.37, Firefox ESR 140.12 and 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, Firefox ESR 115.38, and Firefox ESR 140.13.
No detection rules found.
No public exploits indexed.
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.
## ⚡ Threat of the Week
OpenAI Says Its AI Agent Went Rogue and Targeted Hugging Face - OpenAI disclosed that it lost control of two AI models during a security evaluation that ended in a breach o
Bugzilla
CVE-2026-16360 firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38, Firefox ESR 140.13 and Firefox 153
bugzilla·2026-07-21·CVSS 9.8
CVE-2026-16360 [CRITICAL] CVE-2026-16360 firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38, Firefox ESR 140.13 and Firefox 153
CVE-2026-16360 firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.38, Firefox ESR 140.13 and Firefox 153
Memory safety bugs present in Firefox ESR 115.37, Firefox ESR 140.12 and 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, Firefox ESR 115.38, and Firefox ESR 140.13.
https://bugzilla.mozilla.org/buglist.cgi?bug_id=2022635%2C2028004%2C2035756%2C2045184%2C2045185%2C2045198%2C2045392%2C2045395%2C2045396%2C2045397%2C2045405%2C2045414%2C2045415%2C2045451%2C2045454%2C2045508%2C2045510%2C2045513%2C2045515%2C2045518%2C2045604%2C2045607%2C2045612%2C2045617%2C2045619%2C2045624%2C2045625%2C2045729%2C2045737%2C2045741%2C2045742%2C2045763%2C2045767%2C2045770%2C2045772%2C2045773%2C2045783%2C2045833%2C2045848%2C2045865%2C2045875%2C2045957%2C2047723%2C2047729%2C2048795%2C2048799%2C2048801%2C2049392%2C2049397%2C2049398%2C2049399%2C2049404%2C2049405%2C2049407%2C2049812%2C2050657%2C2050668%2C2050990%2C2053166%2C2053273%2C2053576%2C2053583%2C2053587https://bugzilla.mozilla.org/buglist.cgi?bug_id=2043739%2C2045281%2C2045614%2C2045744%2C2045775%2C2047719%2C2049805%2C2051666https://www.mozilla.org/security/advisories/mfsa2026-68/https://www.mozilla.org/security/advisories/mfsa2026-69/https://www.mozilla.org/security/advisories/mfsa2026-70/https://www.mozilla.org/security/advisories/mfsa2026-71/https://www.mozilla.org/security/advisories/mfsa2026-72/
2026-07-21
Published