CVE-2026-117987
Use-after-free in the Graphics component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 1
CVSS
8.8
High
EPSS
0.4%
p32
KEV
—
Exploit Today
10
0-100
Published: Oct 27, 2026 · Last modified: Nov 5, 2026 · CWE-416
0.2%EPSS · 30 days0.4%
2026-10-282026-11-07
Use-after-free in the Graphics component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
- bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=2079065
- www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-118/
- www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-120/
- www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-121/
- www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-122/
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-1243085.8 MED—
——0Fraunhofer HHI VVdeC before 3.2.1 contains a heap use-after-free vulnerability in DecLibRecon::createSubPicRefBufs because decompressPicture clears m_subPicExtTasks without waiting for pending tasks. Attackers can supply a crafted multi-subpicture VVC bitstream to decoders using two or more threads, causing heap memory corruption or a decoder crash.23hCVE-2026-1243075.8 MED—
——0Fraunhofer HHI VVdeC before 3.2.1 contains a heap use-after-free vulnerability that allows attackers to corrupt memory by redefining an ALF adaptation parameter set id still referenced by slices. Attackers can supply a crafted VVC bitstream that, with multithreaded decoding, makes worker threads dereference freed APS objects in CABACReader::readAlf() and AdaptiveLoopFilter::reconstructCoeff(), causing crashes or heap corruption.23hCVE-2026-1240408.1 HIG44.1%
——13CivetWeb through 1.16, when built with USE_HTTP2 and enable_http2 on, contains a use-after-free vulnerability in handle_http2() that retains freed :method and :path pointers. Unauthenticated remote attackers can send a later HEADERS frame omitting these pseudo-headers to influence request method or path seen by access rules, or crash the server.2dCVE-2026-934247.5 HIG20.4%
——6FastNetMon is a high-performance DDoS detector and sensor. In version 1.2.9 and earlier, peer_find_template() in src/netflow_plugin/netflow_collector.cpp and src/netflow_plugin/netflow_v9_collector.cpp returns a pointer into global_netflow9_templates after releasing the cache mutex. On deployments with at least two entries in netflow_ports, concurrent template redefinition and data-flowset processing can let add_update_peer_template() reassign the template and free its records vector while another listener dereferences the escaped pointer. An unauthenticated sender that can reach both NetFlow/IPFIX listener ports can trigger a heap-use-after-free and reliably crash FastNetMon. No fixed release is available as of this review.3dCVE-2026-69044—3.4%
——1In the Samsung GPU driver, improper reference count handling during command submission can lead to memory corruption.2dCVE-2026-69043—3.4%
——1In the Samsung Exynos GPU driver, improper synchronization during buffer object creation and closing can lead to memory corruption2d