Seguridad de la Información

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48 vulnerabilidades en CISA KEV — explotación activa confirmada Ver todas →

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L Alto vulnerabilidad

[CVE-2026-58050] libssh2 through 1.11.1 reads an attacker-controlled 32-bit attribute count from a publickey-subsyste…

libssh2 through 1.11.1 reads an attacker-controlled 32-bit attribute count from a publickey-subsystem response and uses it in the allocation num_attrs * sizeof(libssh2_publickey_attribute) without bounds checking, so on 32-bit platforms the multiplication overflows to an undersized buffer. A malicious SSH server can then drive the attribute-parsing loop to write past the allocation, causing a heap…

F Alto vulnerabilidad

[CVE-2026-49416] The CONS_HISTORY ioctl handler did not adequately validate the requested history size. A large valu…

The CONS_HISTORY ioctl handler did not adequately validate the requested history size. A large value caused an integer overflow in the buffer size calculation, resulting in a heap allocation smaller than expected. Subsequent initialization of the buffer wrote beyond the end of the allocation. An unprivileged local user with access to a vt(4) device can trigger an out-of-bounds write in the kern…

F Alto vulnerabilidad

[CVE-2026-45258] dsp_mmap_single() validated the requested mapping by checking the sum of the user-supplied offset an…

dsp_mmap_single() validated the requested mapping by checking the sum of the user-supplied offset and length against the buffer size. This addition could overflow, so that a large offset and length wrapped around and passed the check. The offset was then narrowed from 64 to 32 bits when converted to a buffer address, yielding a mapping that extended past the audio buffer into unrelated kernel me…

N Alto vulnerabilidad

[CVE-2026-48933] A flaw in Node.js WebCrypto implementation can crash the process if the input of `subtle.encrypt()` …

A flaw in Node.js WebCrypto implementation can crash the process if the input of `subtle.encrypt()` is a multiple of 2GiB. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.

W Alto vulnerabilidad

[CVE-2026-6679] A heap buffer overflow could occur in the DTLS 1.3 ACK serialization path before the connecting peer…

A heap buffer overflow could occur in the DTLS 1.3 ACK serialization path before the connecting peer is authenticated. The buffer overflow was due to an integer truncation when computing the length of the ACK record-number list, causing an undersized buffer to be allocated and then overrun. This affects builds using DTLS 1.3 and wolfSSL version 5.9.0 and earlier. A fix was added to the 5.9.1 relea…

N Alto vulnerabilidad

[CVE-2026-57235] Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, …

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::NodeSet#[] (and its alias #slice) checked the requested index against the node set's bounds using a 32-bit-truncated copy of the index. A large negative index could pass the check and then be used at full width, reading outside the node set's storage. On CRuby this is an out-of-bounds…

N Alto vulnerabilidad

[CVE-2026-12244] If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR co…

If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an (uint16_t) variable that is used to allocate space needed for the RR wrap (because total size > 65535), causing a heap overflow. The attacker can perform a controlled (RCE class) head write of up to 6550…

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L Alto vulnerabilidad

[CVE-2026-53068] In the Linux kernel, the following vulnerability has been resolved: drm/komeda: fix integer overflo…

In the Linux kernel, the following vulnerability has been resolved: drm/komeda: fix integer overflow in AFBC framebuffer size check The AFBC framebuffer size validation calculates the minimum required buffer size by adding the AFBC payload size to the framebuffer offset. This addition is performed without checking for integer overflow. If the addition oveflows, the size check may incorrectly su…

L Alto vulnerabilidad

[CVE-2026-53059] In the Linux kernel, the following vulnerability has been resolved: dm log: fix out-of-bounds write…

In the Linux kernel, the following vulnerability has been resolved: dm log: fix out-of-bounds write due to region_count overflow The local variable region_count in create_log_context() is declared as unsigned int (32-bit), but dm_sector_div_up() returns sector_t (64-bit). When a device-mapper target has a sufficiently large ti->len with a small region_size, the division result can exceed UINT_MA…

L Alto vulnerabilidad

[CVE-2026-52969] In the Linux kernel, the following vulnerability has been resolved: KVM: Reject wrapped offset in k…

In the Linux kernel, the following vulnerability has been resolved: KVM: Reject wrapped offset in kvm_reset_dirty_gfn() kvm_reset_dirty_gfn() guards the gfn range with if (!memslot || (offset + __fls(mask)) >= memslot->npages) return; but offset is u64 and the addition is unchecked. The check can be silently bypassed by a u64 wrap. The dirty ring backing those entries is MAP_SHARED at KVM…

M Alto vulnerabilidad

[CVE-2026-48502] MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, MessagePackReader…

MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, MessagePackReader.ReadDateTime() can allocate stack memory based on an attacker-controlled MessagePack extension length. In the slow path for timestamp extension parsing, the computed tokenSize includes the extension body length from the wire and is used in a stackalloc operation before the extension length is valid…

S Alto vulnerabilidad

[CVE-2026-49346] libde265 is an open source implementation of the h.265 video codec. Prior to version 1.1.0, a crafte…

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.1.0, a crafted H.265 bitstream with large SPS dimensions and 16-bit bit depth causes a signed integer overflow in `de265_image_get_buffer()` (`libde265/image.cc:128`). The overflow wraps the plane allocation size to a small value (~1 KB), but the subsequent `fill_image()` call computes the real size using `size_…

H Alto vulnerabilidad

[CVE-2026-55203] HAProxy through 3.4.0, fixed in commit 5985276, contains an integer overflow vulnerability in the fc…

HAProxy through 3.4.0, fixed in commit 5985276, contains an integer overflow vulnerability in the fcgi_conn structure's drl field that allows buffer misparse as new FCGI record headers. When contentLength is 65535 and paddingLength is 1 or more, the drl field wraps to 0, causing incorrect record consumption and allowing malicious FastCGI backends to desynchronize the FCGI framing parser, potential…

M Alto vulnerabilidad

[CVE-2026-54417] An integer overflow in the mtar_next() function in src/microtar.c in rxi microtar 0.1.0 allows a rem…

An integer overflow in the mtar_next() function in src/microtar.c in rxi microtar 0.1.0 allows a remote attacker to cause a denial of service (uncontrolled CPU consumption / infinite loop) via a crafted tar archive. mtar_next() computes the offset to the next record as round_up(h.size, 512) + sizeof(mtar_raw_header_t) using 32-bit arithmetic. When the header size field is a multiple of 512 in the …

G Alto vulnerabilidad

[CVE-2026-0161] In numberOfReportBlocks of RtpSession.cpp, there is a possible out of bounds write due to an integer…

In numberOfReportBlocks of RtpSession.cpp, there is a possible out of bounds write due to an integer overflow. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

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G Alto vulnerabilidad

[CVE-2026-0148] In multiple functions of VideoRtpPayloadDecoderNode.cpp, there is a possible out of bounds write due…

In multiple functions of VideoRtpPayloadDecoderNode.cpp, there is a possible out of bounds write due to an integer overflow. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.

G Alto vulnerabilidad

[CVE-2026-0150] In ExecuteGraph command handler of EdgeTPU firmware, there is a possible out of bounds write due to …

In ExecuteGraph command handler of EdgeTPU firmware, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with root privileges needed. User interaction is not needed for exploitation.

G Alto vulnerabilidad

[CVE-2026-0151] In IntfGraphCreate of intfgraph.c, there is a possible out of bounds write due to an integer overflo…

In IntfGraphCreate of intfgraph.c, there is a possible out of bounds write due to an integer overflow. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.

G Alto vulnerabilidad

[CVE-2026-0131] In RtpPacket::decodePacket, there is a possible out of bounds access due to an integer overflow. Thi…

In RtpPacket::decodePacket, there is a possible out of bounds access due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.

M Alto vulnerabilidad

[CVE-2026-10649] A flaw was found in Pacemaker. An unauthenticated remote attacker can exploit an integer overflow vu…

A flaw was found in Pacemaker. An unauthenticated remote attacker can exploit an integer overflow vulnerability in the remote message decompression process. By sending a specially crafted compressed remote message before authentication, an attacker can cause memory corruption, leading to a denial of service (DoS) in the CIB remote listener. This can result in the affected service crashing.

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