Weakness (CWE)
CWE-125: Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
How to prevent it (2 mitigations)
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Implementation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
To reduce the likelihood of introducing an out-of-bounds read, ensure that you validate and ensure correct calculations for any length argument, buffer size calculation, or offset. Be especially careful of relying on a sentinel (i.e. special character such as NUL) in untrusted inputs.
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Architecture and Design
Use a language that provides appropriate memory abstractions.
Source: MITRE CWE-125
6,275 results · Feed
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Medium 5.3
IBM DataPower Gateway Out-of-bounds Read
IBM DataPower Gateway 10.5.0.0 through 10.5.0.22, 10.6.1 through 10.6.6, 10.6.0.0 through 10.6.0.10, and 11.0.0.0 through 11.0.0.2 could allow a remote authenticated attacker to obtain sensitive information due to an out-of-bounds read.
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Medium 4.4
Global buffer out-of-bounds read in DCMTK JPEG Huffman decoding
A global out-of-bounds read in the Huffman decoder of the bundled IJG JPEG libraries (dcmjpeg/libijg8, libijg12 and libijg16) of OFFIS DCMTK 3.7.0 allows an attacker to read memory beyond the extend_test[] and extend_offset[] tables, causing incorrectly decod…
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Medium 4.4
Heap out-of-bounds read in DCMTK RLE decodeFrame()
A heap-based out-of-bounds read in DcmRLECodecDecoder::decodeFrame() in dcmdata/libsrc/dcrleccd.cc of OFFIS DCMTK 3.7.0 allows an attacker to read up to 63 bytes of adjacent heap memory, or cause a crash, via a crafted RLE Lossless DICOM file whose pixel data…
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High 7.1
An out-of-bounds memory read vulnerability exists in the web management daemon of Brocade Fabric OS versions before 10.…
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Medium 6.5
Excelize: Panic in cellInRange on a worksheet with an empty mergeCell ref
Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.7.1 to 2.11.0, mergeCellsParser leaves the cached rectangle empty for an empty mergeCell ref and then passes that empty slice to cellInRange without a length check.…
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High 8.6
Cisco NX-OS Software Security Hardening Release: October 2026 - Out-of-bounds Read Vulnerabilities
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco NX-OS engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally d…
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Medium 5.3
ImageMagick: Heap Buffer Over-Write in distributed pixel cache server will result in a crash
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-31, a client connected to the distributed pixel cache server can send crafted pixel data that triggers an integer-size calculation error and a heap b…
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High 8.2
libexpat Heap Buffer Over-read in xmlparse.c via XML_ParseBuffer
libexpat before commit 13c5f63 contains a heap buffer over-read vulnerability in xmlparse.c. XML_ParseBuffer advances the parse buffer end with parser->m_bufferEnd += len using a caller-supplied length that is not validated against the allocated buffer size, …
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Medium 5.5
Gimp: gimp: heap buffer over-read in x cursor (xmc) thumbnail loader on crafted file
A flaw was found in GIMP’s X cursor (XMC) thumbnail loader. When GIMP generates a thumbnail for a crafted XMC file, it allocates a pixel buffer using a width * height size computed in 32-bit signed arithmetic. If that product overflows, the allocation is smal…
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Medium 5.5
In NTFS-3G before 2026.7.7, a out-of-bounds read exists in ntfs_fix_file_name() in libntfs-3g/reparse.c that allows an …
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Medium 5.5
NVIDIA TensorRT contains a vulnerability where an attacker can cause an out of bounds read. A successful exploit of thi…
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Medium 6.8
HDF5 scale-offset filter heap buffer over-read via crafted chunk
A heap-based buffer over-read in H5Z__filter_scaleoffset() in src/H5Zscaleoffset.c in HDF5 through 2.2.0 lets an attacker cause a denial of service (application crash) with a crafted HDF5 file. When the stored minimum bits equal the full precision of the data…
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Low 3.1
Security Advisory 0196
On affected Arista access points configured with VXLAN tunnelling and L2-proxy (a specific configuration unique to the VESPA use-case), a wireless client associated to the tunnelled SSID can send a crafted packet, causing the access point to reveal memory con…
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High 7.5
Gitea denial of service through external issue tracker patterns
A repository's external issue tracker regular expression containing alternating capture groups could produce invalid slice indexes when Gitea rendered issue references, causing a runtime panic that terminated the Gitea process. A user who can edit a repositor…
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Low 3.3
Out of bounds read in Skia in Google Chrome prior to 155.0.8059.39 allowed a local attacker leveraging social engineeri…
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Medium 4.7
Out of bounds read in ANGLE in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to read memory outside th…
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Medium 4.7
Out of bounds read in Printing in Google Chrome on on Windows prior to 155.0.8059.39 allowed a remote attacker who had …
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Low 3.7
tftp-hpa 5.4 before 6.0 Out-of-Bounds Read via tftpd Remap Jump Rule
tftp-hpa 5.4 before 6.0 contains an out-of-bounds read vulnerability in rewrite_string() in tftpd/remap.c that walks heap memory during jump label searches. Unauthenticated remote attackers can send read or write requests whose filename matches a remap jump r…
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Medium 5.5
libmikmod before 3.3.14 Heap Out-of-Bounds Read via IT Module Loader
libmikmod before 3.3.14 contains a heap out-of-bounds read vulnerability in the Impulse Tracker loader load_it.c that allows attackers to read adjacent heap memory via oversized patterns. Attackers can supply a crafted IT module with more than 200 pattern row…
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Low 1.8
Out-of-bounds Read in GNU Aspell
GNU Aspell contains an out-of-bounds read vulnerability in ReadOnlyDict::load() in readonly_ws.cpp. When loading a binary .rws dictionary file, it uses offset fields from the file header as byte indices into a heap buffer without validating their bounds. An a…
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Medium 4.3
vllm-project vLLM Completions Request mamba_mixer2.py conv_ssm_forward out-of-bounds
A security vulnerability has been detected in vllm-project vLLM up to 0.31.0. This impacts the function conv_ssm_forward of the file vllm/model_executor/layers/mamba/mamba_mixer2.py of the component Completions Request Handler. The manipulation leads to out-o…
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Medium 5.5
Sssd: sssd: denial of service via undersized packet parsing in nss responder
A flaw was found in SSSD. A local attacker with access to the Name Service Switch (NSS) responder UNIX socket can trigger an integer underflow by sending a specially crafted request with an undersized packet header. This issue causes an out-of-bounds memory r…
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Medium 5.5
Sssd: sssd: denial of service via out-of-bounds read in pam responder
A flaw was found in sssd. A local attacker can cause a Denial of Service (DoS) by sending a crafted Pluggable Authentication Module (PAM) request containing a zero-length authentication token to the responder socket. Due to missing input validation, the servi…
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Medium 5.5
Sssd: sssd: denial of service via packet length underflow in autofs responder
A flaw was found in SSSD. A local attacker can exploit this issue by sending a specially crafted request with an invalid packet length to the autofs responder UNIX socket. This causes an integer underflow and an out-of-bounds memory read, which can crash the …
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Low 3.3
Sssd: sssd: denial of service via out-of-bounds read in autofs responder
A flaw was found in SSSD. A local attacker can exploit this vulnerability by sending a specially crafted request to the autofs responder UNIX socket. Due to improper buffer offset calculation during request parsing, the service performs an out-of-bounds memor…
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Medium 5.5
Sssd: sssd: denial of service via out-of-bounds read during passkey parsing
A flaw was found in sssd. This vulnerability allows a local user to cause a Denial of Service (DoS) by submitting a specially crafted passkey authentication token that lacks null terminators. The authentication service reads past the end of the provided memor…
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Medium 6.9
JavaScript preprocessing memory disclosure
The JavaScript preprocessing (Duktape) engine on Zabbix server has a vulnerability where a limited administrator is able to read raw heap data potentially resulting in leaked data from other running preprocessors not available to said administrator.
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Medium 6.3
vgmstream VAG File psx_decoder.c ps_find_padding out-of-bounds
A vulnerability was detected in vgmstream up to r2117. Affected by this vulnerability is the function ps_find_padding of the file src/coding/psx_decoder.c of the component VAG File Handler. Performing a manipulation results in out-of-bounds read. The attack i…
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Medium 5.3
In Modem, there is a possible out of bounds read due to an incorrect bounds check. This could lead to remote denial of …
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Low 2.7
NASA cFS cfe_fs_api.c CFE_FS_ParseInputFileNameEx out-of-bounds
A flaw has been found in NASA cFS up to 7.0.1. This issue affects the function CFE_FS_ParseInputFileNameEx of the file cfe/modules/fs/fsw/src/cfe_fs_api.c. This manipulation causes out-of-bounds read. Remote exploitation of the attack is possible. The pull re…
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High 7.5
Mooncake before 0.3.12 Out-of-Bounds Read via P2P Handshake readString
Mooncake transfer engine before 0.3.12 contains an out-of-bounds read vulnerability in the readString function of include/common.h that allows unauthenticated attackers to crash the service by sending a zero-length handshake frame. Attackers can connect to th…
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Low 2.3
xxhash-rust: Safe xxh3 custom-secret API accepts too-short secret in release
I have a minimized safe Rust witness for xxhash-rust 0.8.15. Safe public route: xxhash_rust::xxh3::xxh3_64_with_secret(&[0x41], &[]) The caller-side harness contains no unsafe code. Under release execution, the internal minimum custom-secret length predicate …
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High 8.4
Out-of-bounds write in PeaZip PEA extractor allows code execution via a crafted .pea archive
Out-of-bounds Write (CWE-787) in the PEA archive extraction routine (pea.pas, unpea_procedure) of the first-party pea component in PeaZip 11.2.0 and earlier allows an attacker who convinces a victim to open or extract a crafted .pea archive to execute arbitra…
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High 7.5
Fortra BoKS Manager boks_portmux TLS ClientHello out-of-bounds read vulnerability
Fortra BoKS Manager contains an out-of-bounds read vulnerability in the custom TLS ClientHello parser used by boks_portmux. A remote unauthenticated attacker can submit a malformed ClientHello and terminate boks_portmux. Although the daemon is normally restar…
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Medium 5.4
Tnef: heap out-of-bounds read in get_rtf_data_from_buf() via uncompressed rtf mapi value
A flaw was found in tnef. An attacker can exploit this vulnerability by providing a specially crafted file containing uncompressed Rich Text Format (RTF) data. Because the application fails to properly validate input buffer boundaries before copying data in g…
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Medium 5.5
Gegl: gegl04: gegl: out-of-bounds read in the radiance hdr uncompressed scanline decoder
A flaw was found in GEGL. The Radiance HDR loader reads past the end of a memory-mapped image when an uncompressed scanline is shorter than the width declared in the file header. Opening a crafted HDR file crashes the application that uses the loader.
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High 7.8
NVIDIA vGPU Virtual GPU Manager for Linux contains a vulnerability in the kernel mode layer where an attacker could cau…
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High 7.8
NVIDIA vGPU Virtual GPU Manager for Linux contains a vulnerability in the kernel mode layer where an attacker could cau…
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High 7.8
NVIDIA vGPU Virtual GPU Manager for Linux contains a vulnerability in the firmware where an attacker could cause an out…
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High 7.8
NVIDIA vGPU Virtual GPU Manager for Linux contains a vulnerability in the kernel mode layer where an attacker could cau…