Weakness (CWE)
CWE-416: Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
How to prevent it (2 mitigations)
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Architecture and Design
Choose a language that provides automatic memory management.
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Implementation
When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
Source: MITRE CWE-416
6,530 results · Feed
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High 7.8
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 26.7 and iPadOS 26.7, …
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High 7.5
A use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 27.2 and iPadOS 27.2, …
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High 8.8
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 27.2, iOS 26.7.2 an…
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High 7.7
A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Golden Gate 27.2, ma…
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High 7.8
A use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 27.2 and iPadOS 27.2, …
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High 7.5
A use after free issue was addressed with improved memory management. This issue is fixed in macOS Golden Gate 27.2, ma…
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High 8.8
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 27.2, iOS 26.7.2 an…
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High 7.5
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 27.2, iOS 26.7.2 an…
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Medium 4.3
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 27.2, iOS 26.7.2 an…
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High 8.8
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 27.2, iOS 26.7.2 an…
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High 8.8
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 27.2, iOS 26.7.2 an…
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High 7.1
Asterisk: Heap-use-after-free in Asterisk PJSIP TCP/SDP handling when TCP connection closes during SDP processing
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an authenticated attacker may cause a heap-use-after-free in `PJSIP TCP/SDP` handling…
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Medium 5.3
Use of a released HFP HF object after a failed RFCOMM connect in the Bluetooth Classic host
bt_hfp_hf_connect() in subsys/bluetooth/host/classic/hfp_hf.c allocates the per-connection HFP Hands-Free object with hfp_hf_create(), which starts an SDP discovery by passing the object's embedded hf->sdp_param to bt_sdp_discover(). That call links the calle…
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Medium 5.9
netty-tcnative 2.0.66.Final before 2.0.84.Final Use-After-Free in Session Ticket Callback
netty-tcnative 2.0.66.Final before 2.0.84.Final built against OpenSSL 3.x contains a use-after-free vulnerability in ssl_tlsext_ticket_key_cb during session ticket key rotation. Remote clients performing TLS handshakes while setSessionTicketKeys0 frees the sh…
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High 7.8
Stale TLB entries after demand-paging page-out let arm64 user threads access reused physical frames
The arm64 MMU backend invalidates a single virtual address from the TLB with invalidate_tlb_page() in arch/arm64/core/mmu.c, which issued TLBI VAE1{IS} with an operand of virt >> 12. That operand encodes the ASID in bits [63:48], so the invalidation only ever…
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High 8.8
odhcpd DHCPv6 IA dangling first pointer use-after-free
odhcpd is the DHCPv6, DHCPv4, and router-advertisement server used by OpenWrt. Prior to version 25.12, odhcpd's DHCPv6 IA handler keeps a per-message `first` lease pointer so multiple IA options in one message reuse the same Reconfigure authentication key. A …
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Low 2.1
Use-after-free vulnerability in QNetworkAccessManager HTTP/2 support impacts Qt
A use-after-free vulnerability in the Qt QNetworkAccessManager HTTP/2 client support of the Qt Network module allows a malicious or compromised HTTP/2 server to cause the client application to crash, affecting availability.
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Medium 5.7
Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 GC Heap Corruption via try_call
Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a missing GC rooting vulnerability that leaves references live across try_call unrooted when compiling Wasm modules. Attackers can supply Wasm modules whose callee triggers garbage collection, le…
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High 7.5
MessagePack: Unbounded memory leak in msgpack C extension on strict_map_key validation failure
MessagePack is the serializer implementation for Python msgpack.org. Prior to 1.2.3, the msgpack-python C extension (msgpack._cmsgpack) leaks a decoded map value when deserialization rejects a key with strict_map_key=True (the default). Repeated malformed inp…
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High 8.2
Apache Traffic Server: wasm plugin has a use-after-free and forwards unvalidated guest metric IDs
Apache Traffic Server's experimental wasm plugin has a use-after-free in its transaction-close handler and forwards unvalidated guest-supplied metric IDs to the internal stats API. This issue affects Apache Traffic Server: from 10.0.0 through 10.1.4, 10.2.0. …
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Critical 9.2
RCE via stale global state
PHP has various global state that temporarily points into request memory. In some scenarios, global state may not be correctly reset, or may be repopulated after being reset. The global state may then refer to request memory even after it has been freed. Subs…
KEV Oct 26, 2026 -
Critical 9.2
RCE via OOM corruption
PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort handling of the request. Some contexts may not properly account for this scenario and leave request memory in an uninitialized state before performing an allocation. The s…
KEV Oct 26, 2026 -
Medium 5.4
Apache bRPC: Use-After-Free in RTMP Chunk Stream Handling via Abort Message
Use-after-free in the RTMP protocol implementation in Apache bRPC (version < 1.18.0) on all platforms allows a malicious RTMP peer to crash the process or potentially corrupt memory via a crafted Abort message. Root Cause: When processing an RTMP Abort (proto…
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High 7.5
Apache bRPC: Heap Use-After-Free in RTMP Abort Message Handling
A heap use-after-free in the RTMP protocol component of Apache bRPC (versions < 1.18.0) allows a remote attacker to crash a bRPC RTMP server by sending a crafted Abort control message. No authentication or application-level request is required. Root Cause: Wh…
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High 7.5CVE-2026-97206 Public exploit
DNS-over-QUIC (DoQ) path-migration can lead to use-after-free on multi-threaded deployments.
NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC (DoQ) lifetime bug reachable by a remote DoQ client under multi-threaded operation. A client-triggered QUIC path migration can enter stream/connection cleanup while a mesh…
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High 8.9
Sharp before 0.35.5 RCE via librsvg Dependency Memory Vulnerability
sharp before 0.35.5 bundles a librsvg dependency affected by a memory-related vulnerability (CVE-2026-96889) that, under certain runtime-specific conditions, can lead to code execution on glibc-based Linux. An attacker can supply a crafted SVG image that, whe…
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Medium 6.5
FreeRDP 3.32.0 Use-After-Free via drdynvc Virtual Channel PDU
FreeRDP 3.32.0 contains a use-after-free vulnerability in the drdynvc channel that frees a pool-owned stream with the owned-stream deallocator when totalLength is smaller than the chunk size. A malicious RDP server can send a single well-formed Virtual Channe…
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Medium 5.5
A heap use-after-free in the dasher_flush_segment function (/filters/dasher.c) of GPAC Project/MP4Box before 2.5 allows…
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Medium 5.5
A heap use-after-free in the gf_odf_ac4_cfg_clean_list function (/odf/descriptors.c) of GPAC Project/MP4Box before 2.5 …
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Medium 5.5
A use-after-free in the gf_filter_packet_destroy function (/filter_core/filter_pck.c) of GPAC Project/MP4Box before 2.5…
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Medium 5.3
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java S…
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Medium 5.3
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java S…
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Medium 5.4
Vulnerability in the Oracle Java SE, Oracle JavaFX, Oracle GraalVM Enterprise Edition product of Oracle Java SE (compon…
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Medium 4.7
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java S…
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High 8.8
Use after free in Bookmarks in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code…
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High 8.8
Use after free in FileSystem in Google Chrome prior to 156.0.8078.47 allowed a remote attacker who had compromised the …
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High 8.8
Use after free in Views in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitr…
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High 8.8
Use after free in Views in Google Chrome prior to 156.0.8078.47 allowed a remote attacker who had compromised the rende…
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High 8.8
Use after free in Input in Google Chrome prior to 156.0.8078.47 allowed a remote attacker who had compromised the rende…
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High 8.8
Use after free in PlatformIntegration in Google Chrome prior to 156.0.8078.47 allowed a remote attacker leveraging soci…