CVE-2016-5276

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

Use-after-free vulnerability in the mozilla::a11y::DocAccessible::ProcessInvalidationList function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via an aria-owns attribute.

Metrics

CVSS 3.0 9.8/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

VendorProductVersions
n/an/an/a

References

Timeline

Published
Sep 22, 2016
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2016

CVE-2016-52779.8Use-after-free vulnerability in the nsRefreshDriver::Tick function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and ThunderCVE-2016-52788.8Heap-based buffer overflow in the nsBMPEncoder::AddImageFrame function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and ThuCVE-2016-52794.3Mozilla Firefox before 49.0 allows user-assisted remote attackers to obtain sensitive full-pathname information during a local-file drag-andCVE-2016-52809.8Use-after-free vulnerability in the mozilla::nsTextNodeDirectionalityMap::RemoveElementFromMap function in Mozilla Firefox before 49.0, FireCVE-2016-52819.8Use-after-free vulnerability in the DOMSVGLength class in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 CVE-2016-52826.5Mozilla Firefox before 49.0 does not properly restrict the scheme in favicon requests, which might allow remote attackers to obtain sensitivCVE-2016-52838.8Mozilla Firefox before 49.0 allows remote attackers to bypass the Same Origin Policy via a crafted fragment identifier in the SRC attribute CVE-2016-52847.4Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 rely on unintended expiration dates for Preloaded Public KCVE-2016-52857.5A Null pointer dereference vulnerability exists in Mozilla Network Security Services due to a missing NULL check in PK11_SignWithSymKey / ssCVE-2016-52879.8A potentially exploitable use-after-free crash during actor destruction with service workers. This issue does not affect releases earlier thCVE-2016-52885.9Web content could access information in the HTTP cache if e10s is disabled. This can reveal some visited URLs and the contents of those pageCVE-2016-52899.8Memory safety bugs were reported in Firefox 49. Some of these bugs showed evidence of memory corruption and we presume that with enough effo
CVE-2016-5276: Critical severity, CVSS 9.8 | Vulnix