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Published vulnerabilities with severity, known exploitation and official sources.
CVE-2026-18103
Medium · 4.9
CWE-120 Aug 4, 2026
Dhcp-server: dhcp-server: persistent denial of service due to buffer overflow via omapi
A flaw was found in dhcp-server. A remote attacker with network access to the OMAPI (Open Management Application Programming Interface) port, especially if not secured with TSIG (Transaction Signature) key authentication, could send a specially crafted lease creation request. This request, containing an overly long InfiniBand MAC address, triggers a buffer overflow in the `print_hw_addr()` function. Successful exploitation leads to a persistent denial of service (DoS), causing the `dhcpd` service to crash and preventing it from restarting without manual intervention.
CVE-2026-45537
Critical · 9.1
CWE-120 Aug 4, 2026
OpenSIPS: Global Buffer Overflow in construct_uri
OpenSIPS is a Session Initiation Protocol (SIP) server implementation. In versions prior to 3.6.6 and 4.0.0-rc1, the construct_uri() function concatenates multiple URI components (protocol, username, domain, port, params) into a fixed 1024-byte global BSS buffer without any bounds checking. When a routing script calls construct_uri() with an attacker-controlled username, a combined component length exceeding 1024 bytes overflows the buffer, corrupting adjacent global data with attacker-controlled content. The overflow reaches disable_503_translation, a global flag controlling SIP 503 response handling, allowing an attacker to deterministically set the flag via the URI username and alter the server's routing behavior for subsequent messages. Because the same buffer is shared with contact_builder(), the overflow also corrupts that function's data, and without a memory sanitizer the adjacent globals are silently overwritten on every request containing a long username. This issue has been fixed in versions 3.6.6 and 4.0.0-rc1.
CVE-2026-67859
High · 7.5
CWE-120 Aug 4, 2026
Buffer Overflow vulnerability in open62541 v1.5.5 allows a remote attacker to cause a…
Buffer Overflow vulnerability in open62541 v1.5.5 allows a remote attacker to cause a denial of service via the Discovery/LDS handling.
CVE-2026-67858
High · 7.5
CWE-120 Aug 4, 2026
Buffer Overflow vulnerability exists in open62541 1.5.5 when the Local Discovery Server…
Buffer Overflow vulnerability exists in open62541 1.5.5 when the Local Discovery Server (LDS) is built with multicast discovery enabled through the MDNSD backend. An unauthenticated remote attacker can send a RegisterServer or RegisterServer2 request containing many unique discoveryUrls. This allows remote attackers to cause a denial of service.
CVE-2026-45100
Critical · 9.1
CWE-120 Aug 4, 2026
OpenSIPS: Buffer Overflow in Base64 Encode Transformation
OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Versions 3.4.0-beta through 3.6.5 and 4.0.0-beta contain a buffer overflow in the {s.b64encode} string transformation. The size check for {s.b64encode} only verifies that the input fits within the 64 KB transformation buffer, but base64 encoding expands the data by roughly a third, so an input between about 49,153 and 65,535 bytes produces more output than the buffer can hold and overflows it by up to 21,844 bytes. Because these transformation buffers sit next to each other in memory and are reused for chained transformations, the overflow writes attacker-controlled data into the adjacent buffer and corrupts values used by later transformations processing the same SIP message. A remote attacker can trigger this by sending a SIP message with a large header value (roughly 50,000 bytes or more) when the routing script applies {s.b64encode} to attacker-controlled input, making exploitability dependent on the deployment's routing configuration. This issue has been fixed in versions 3.6.6 and 4.0.0-rc1.
CVE-2026-15314
High · 7.5
CWE-120 Aug 4, 2026
Authenticated Denial-of-Service Vulnerability in TP-Link Tapo P110
Tapo P110 v1
smart Wi-Fi Plug contains an improper boundary validation vulnerability in the
handling of authenticated HTTP request bodies due to insufficient input
validation before memory copy operations. This may lead to buffer overflow condition,
causing the web service process to crash.
Successful exploitation
may cause the web service process to stop responding or restart, resulting in a
denial-of-service condition.
CVE-2026-24080
High · 7.8
CWE-120 Aug 4, 2026
Buffer Copy Without Checking Size of Input in Biometrics
Memory Corruption when handling malformed request parameters in the fingerprint TA.
CVE-2026-24076
Medium · 6.7
CWE-120 Aug 4, 2026
Buffer Copy Without Checking Size of Input in Bluetooth HOST
Memory Corruption when processing registry values with incorrect types using a direct query method.
CVE-2026-6694
Medium · 5.5
CWE-120 Aug 3, 2026
Gimp: gimp file-png plugin: denial of service via oversized apng trns chunk
A flaw was found in GIMP's file-png plugin. A remote attacker can exploit this by crafting a malicious Animated Portable Network Graphics (APNG) image containing an oversized tRNS chunk. This can lead to a stack-based buffer overflow (CWE-121), causing the file-png plugin to crash and resulting in a Denial of Service (DoS) for the user.
CVE-2026-18321
Medium · 4.7
CWE-120 Jul 31, 2026
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in ntpsec
Buffer overflow in NTPsec's Zyfer refclock allows local attacker to crash ntpd
CVE-2026-11885
High · 8.4
CWE-120 Jul 30, 2026
Power System update in Buffer Copy
IBM PowerVM Hypervisor FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H1 A carefully crafted OS hypervisor call can cause the PowerVM hypervisor to crash or compromise OS memory integrity.
CVE-2026-64767
Critical · 9.8
CWE-120 Jul 27, 2026
Classic Buffer Overflow in Apple Macos
A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.
CVE-2026-64747
High · 7.8
CWE-120 Jul 27, 2026
Classic Buffer Overflow in Apple Ipados
A buffer overflow was addressed with improved size validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to execute arbitrary code with kernel privileges.
CVE-2026-64722
Medium · 5.5
CWE-120 Jul 27, 2026
Classic Buffer Overflow in Apple Ipados
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6. Processing a 3D model may result in disclosure of process memory.
CVE-2026-64691
Critical · 9.8
CWE-120 Jul 27, 2026
A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Tahoe...
A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Tahoe 26.6. An app may be able to cause unexpected system termination.
CVE-2026-43807
Critical · 9.8
CWE-120 Jul 27, 2026
Classic Buffer Overflow in Apple Ipados
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. A malicious accessory may be able to cause unexpected app termination.
CVE-2026-43776
High · 7.8
CWE-120 Jul 27, 2026
Classic Buffer Overflow in Apple Ipados
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6. Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution.
CVE-2026-43750
Critical · 9.8
CWE-120 Jul 27, 2026
A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS...
A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to execute arbitrary code out of its sandbox or with certain elevated privileges.
CVE-2026-43681
High · 7.1
CWE-120 Jul 27, 2026
A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS...
A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A local user may be able to read kernel memory.
CVE-2026-28981
High · 7.8
CWE-120 Jul 27, 2026
A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS...
A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. Processing a maliciously crafted image may lead to arbitrary code execution.
CVE-2026-28931
High · 8.8
CWE-120 Jul 27, 2026
Classic Buffer Overflow in Apple Ipados
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, watchOS 26.6. Connecting to a malicious NFS server may lead to kernel memory corruption.
CVE-2026-59250
High · 8.3
CWE-120 Jul 27, 2026
Megaco flex scanner buffer overflow via oversized property parm name
Classic buffer overflow in the Erlang/OTP megaco flex scanner C driver allows a remote unauthenticated attacker to corrupt the driver's memory (and potentially achieve remote code execution or a denial-of-service crash) by sending a single text-encoded H.248/Megaco message containing an oversized property parm name.
When tokenizing a Local/Remote descriptor, mfs_load_property_groups extracts the attacker-controlled property name (bounded only by the message length) and, when no value follows, formats it into a fixed 512-byte error_msg field of the MfsErlDrvData struct using an unchecked sprintf call. Names longer than roughly 452 bytes overflow into the immediately following struct fields (text_buf, text_ptr, term_spec, term_spec_size, term_spec_index), overwriting live pointers and counters with attacker-chosen bytes. Subsequent scanner code writes and frees through the corrupted pointers, producing arbitrary write and arbitrary free primitives inside the BEAM VM process, which can be leveraged for remote code execution. On builds compiled with _FORTIFY_SOURCE the overflow is detected at runtime and terminates the process with SIGABRT, resulting in denial of service.
The overflow occurs in the flex scanner before any grammar or Megaco-level authentication processing, so exploitation requires only network reachability to the megaco transport port on a node configured with {scanner, flex}.
This vulnerability is associated with program files lib/megaco/src/flex/megaco_flex_scanner_drv.flex.src and program routines mfs_load_property_groups.
This issue affects OTP from OTP 17.0 before OTP 27.3.4.15, from OTP 28.0 before OTP 28.5.0.4, and from OTP 29.0 before OTP 29.0.4, corresponding to megaco from 3.17.1 before 4.7.2.2, from 4.8 before 4.8.3.1, and from 4.9 before 4.9.1. Whether OTP before OTP 17.0, corresponding to megaco before 3.17.1, is affected is unknown.
CVE-2026-45811
High · 7.5
CWE-120 Jul 24, 2026
Apache NimBLE: Buffer overflow in socket HCI transport
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in Apache NimBLE.
The HCI socket transport did not check whether a received HCI event would fit the configured event pool before copying it, allowing a buffer overflow. Severity is low: exploitation requires either a misconfigured pool size or a malicious/compromised controller on the other end of the HCI socket link, not over-the-air Bluetooth access.
This issue affects Apache NimBLE: through 1.9.0.
Users are recommended to upgrade to version 1.10.0, which fixes the issue.
CVE-2026-63453
High · 7.2
CWE-120 Jul 21, 2026
Authenticated Buffer Overflow Vulnerabilities lead to Remote Code Execution in AOS-CX
Buffer overflow vulnerabilities exist in the command line interface of AOS-CX. Successful exploitation of these vulnerabilities could allow a remote high-privileged user to execute arbitrary code as a privileged user on the underlying operating system.
CVE-2026-44880
High · 8.8
CWE-120 Jul 21, 2026
Low-Privilege Authenticated Buffer Overflow Vulnerabilities lead to Remote Code Execution in AOS-CX
A buffer overflow vulnerability was found in the command line interface of AOS-CX. Successful exploitation of these vulnerabilities could allow an remote low-privileged user to execute arbitrary code as a privileged user on the underlying operating system.