CVE-2026-16383
published 2026-07-21CVE-2026-16383: Mitigation bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
PriorityP353critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
0.39%
31.9th percentile
Mitigation bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 153 | Firefox 153 |
| mozilla | firefox | < 140.13.0 | 140.13.0 |
| mozilla | firefox | < 153.0.0 | 153.0.0 |
| mozilla | firefox | — | — |
| mozilla | firefox_esr | < Firefox ESR 140.13 | Firefox ESR 140.13 |
| mozilla | thunderbird | < Thunderbird 140.13 | Thunderbird 140.13 |
| mozilla | thunderbird | < Thunderbird 153 | Thunderbird 153 |
| 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
kernel: wifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer
vendor_redhat·2026-08-15·CVSS 8.1
CVE-2026-74410 [HIGH] CWE-125 kernel: wifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer
kernel: wifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer
In the Linux kernel, the following vulnerability has been resolved:
wifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer
In rtw_pci_rx_napi(), new_len is computed as the sum of pkt_len (14-bit
descriptor field, max 16383) and pkt_offset (drv_info_sz + shift, both
firmware-controlled). The result can exceed RTK_PCI_RX_BUF_SIZE (11478),
causing an out-of-bounds read from the pre-allocated DMA buffer when
skb_put_data copies new_len bytes. The USB transport already validates
this (rtw_usb_rx_data_put checks against RTW_USB_MAX_RECVBUF_SZ); the
PCIe path does not.
Add a check that new_len does not exceed the DMA buffer size.
A flaw was found in the Linux kernel's rtw88 wifi driver. An att
Red Hat
firefox: thunderbird: Mitigation bypass in the DOM: Networking component
vendor_redhat·2026-07-21·CVSS 9.8
CVE-2026-16383 [CRITICAL] CWE-807 firefox: thunderbird: Mitigation bypass in the DOM: Networking component
firefox: thunderbird: Mitigation bypass in the DOM: Networking component
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Mitigation bypass in the DOM: Networking component
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
Package: thunderbird (Red Hat Enterprise Linux 10) - Affected
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: thunderbird (Red Hat Enterprise Linux 6) - Out of support scope
Package:
Mozilla
Mozilla Foundation Security Advisory 2026-68: CVE-2026-16383
vendor_mozilla
CVE-2026-16383 Mozilla Foundation Security Advisory 2026-68: CVE-2026-16383
Mozilla Foundation Security Advisory 2026-68
CVE: CVE-2026-16383
Product: Firefox
Impact: high
Fixed in: Firefox 153
Mozilla
Mozilla Foundation Security Advisory 2026-72: CVE-2026-16383
vendor_mozilla
CVE-2026-16383 Mozilla Foundation Security Advisory 2026-72: CVE-2026-16383
Mozilla Foundation Security Advisory 2026-72
CVE: CVE-2026-16383
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 140.13
Mozilla
Mozilla Foundation Security Advisory 2026-71: CVE-2026-16383
vendor_mozilla
CVE-2026-16383 Mozilla Foundation Security Advisory 2026-71: CVE-2026-16383
Mozilla Foundation Security Advisory 2026-71
CVE: CVE-2026-16383
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 153
Mozilla
Mozilla Foundation Security Advisory 2026-70: CVE-2026-16383
vendor_mozilla
CVE-2026-16383 Mozilla Foundation Security Advisory 2026-70: CVE-2026-16383
Mozilla Foundation Security Advisory 2026-70
CVE: CVE-2026-16383
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 140.13
GHSA
Mitigation bypass in the DOM: Networking component.
ghsa_unreviewed·2026-07-21
CVE-2026-16383 [CRITICAL] CWE-693 Mitigation bypass in the DOM: Networking component.
Mitigation bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-74410 kernel: wifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer
bugzilla·2026-08-15·CVSS 8.1
CVE-2026-74410 [HIGH] CVE-2026-74410 kernel: wifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer
CVE-2026-74410 kernel: wifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer
In the Linux kernel, the following vulnerability has been resolved:
wifi: rtw88: fix OOB read from firmware RX descriptor exceeding DMA buffer
In rtw_pci_rx_napi(), new_len is computed as the sum of pkt_len (14-bit
descriptor field, max 16383) and pkt_offset (drv_info_sz + shift, both
firmware-controlled). The result can exceed RTK_PCI_RX_BUF_SIZE (11478),
causing an out-of-bounds read from the pre-allocated DMA buffer when
skb_put_data copies new_len bytes. The USB transport already validates
this (rtw_usb_rx_data_put checks against RTW_USB_MAX_RECVBUF_SZ); the
PCIe path does not.
Add a check that new_len does not exceed the DMA buffer size.
Discussion:
Upstream advisory:
https://lore.k
Bugzilla
CVE-2026-16383 firefox: thunderbird: Mitigation bypass in the DOM: Networking component
bugzilla·2026-07-21·CVSS 9.8
CVE-2026-16383 [CRITICAL] CVE-2026-16383 firefox: thunderbird: Mitigation bypass in the DOM: Networking component
CVE-2026-16383 firefox: thunderbird: Mitigation bypass in the DOM: Networking component
Mitigation bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.
2026-07-21
Published