Out-of-bounds Write
CWE-787
The product writes data past the end, or before the beginning, of the intended buffer.
We track 5,885 vulnerabilities of this type. 100% are rated high or critical, and the average CVSS score is 8.3. 167 have been exploited in real attacks.
How this weakness is prevented
- Requirements: Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer. Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
- Architecture and Design: Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. Examples include the Safe C String Library (SafeStr) by Messier and Viega, and the Strsafe.h library from Microsoft. These libraries provide safer versions of overflow-prone string-handling functions.
- Operation Build and Compilation: Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking. D3-SFCV (Stack Frame Canary Validation) from D3FEND discusses canary-based detection in detail.
- Operation: Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment. For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND.
- Implementation: Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
Latest Out-of-bounds Write vulnerabilities
- 7.8 High severity
V-SFT: Out-of-bounds Write
An out-of-bounds write vulnerability exists in VS6ComFile!CItemExChange::WinFontDynStrCheck of V-SFT v6.2.7.0 and earlier. Opening specially crafted V-SFT files may lead to information disclosure, affected system's abnormal end (ABEND), and arbitrary code exec
- 7.8 High severity
Samsung Mobile Devices: Out-of-bounds Write
Out-of-bounds write in the parsing header for JPEG decoding in libpadm.so prior to SMR Oct-2025 Release 1 allows local attackers to cause memory corruption.
- 7.8 High severity
Samsung Mobile Devices: Out-of-bounds Write
Out-of-bounds write under specific condition in the pre-processing of JPEG decoding in libpadm.so prior to SMR Oct-2025 Release 1 allows local attackers to cause memory corruption.
- 7.8 High severity
Samsung Mobile Devices: Out-of-bounds Write
Out-of-bounds write in the pre-processing of JPEG decoding in libpadm.so prior to SMR Oct-2025 Release 1 allows local attackers to write out-of-bounds memory.
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix untrusted unsigned subtract Fix the following Smatch static checker warning: net/rxrpc/rxgk_app.c:65 rxgk_yfs_decode_ticket() warn: untrusted unsigned subtract. 'ticket_len - 10 * 4
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL OPDESC() simply indexes into nfsd4_ops[] by the op's operation number, without range checking that value. It assumes callers are care
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() The function lio_target_nacl_info_show() uses sprintf() in a loop to print details for every iSCSI connection in a sessi
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: vdpa: Add features attr to vdpa_nl_policy for nlattr length check The vdpa_nl_policy structure is used to validate the nlattr when parsing the incoming nlmsg. It will ensure the attribute bein
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: drm/msm/dp: fix memory corruption with too many bridges Add the missing sanity check on the bridge counter to avoid corrupting data beyond the fixed-sized bridge array in case there are ever m
- 8.7 High severity
FFmpeg: Out-of-bounds Write
When decoding an OpenEXR file that uses DWAA or DWAB compression, there's an implicit assumption that all image channels have the same pixel type (and size), and that if there are four channels, the first four are "B", "G", "R" and "A". The channel parsing cod
- 8.7 High severity
FFmpeg: Out-of-bounds Write
When decoding an OpenEXR file that uses DWAA or DWAB compression, there's an implicit assumption that the height and width are divisible by 8. If the height or width of the image is not divisible by 8, the copy loops at [0] and [1] will continue to write until
- 8.7 High severity
MPEG-DASH: Out-of-bounds Write
When calculating the content path in handling of MPEG-DASH manifests, there's an out-of-bounds NUL-byte write one byte past the end of the buffer.When we call xmlNodeGetContent below [0], it returns a buffer precisely allocated to match the string length, usin
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: staging: ks7010: potential buffer overflow in ks_wlan_set_encode_ext() The "exc->key_len" is a u16 that comes from the user. If it's over IW_ENCODING_TOKEN_MAX (64) that could lead to memory c
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: vdpa: Add max vqp attr to vdpa_nl_policy for nlattr length check The vdpa_nl_policy structure is used to validate the nlattr when parsing the incoming nlmsg. It will ensure the attribute being
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: brcmnand: Fix potential out-of-bounds access in oob write When the oob buffer length is not in multiple of words, the oob write function does out-of-bounds read on the oob source
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: avoid buffer overflow in WID string configuration Fix the following copy overflow warning identified by Smatch checker. drivers/net/wireless/microchip/wilc1000/wlan_cfg.c:184 w
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: iommu/s390: Fix memory corruption when using identity domain zpci_get_iommu_ctrs() returns counter information to be reported as part of device statistics; these counters are stored as part of
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: ASoC: codec: sma1307: Fix memory corruption in sma1307_setting_loaded() The sma1307->set.header_size is how many integers are in the header (there are 8 of them) but instead of allocating spac
- 8.8 High severity
Qsync Central: Out-of-bounds Write
An out-of-bounds write vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to modify or corrupt memory. We have already fixed the vulnerability in the following version: Qs
- 7.8 High severity
DIAScreen: Out-of-bounds Write
Delta Electronics DIAScreen lacks proper validation of the user-supplied file. If a user opens a malicious file, an attacker can leverage this vulnerability to execute code in the context of the current process.
- 7.8 High severity
DIAScreen: Out-of-bounds Write
Delta Electronics DIAScreen lacks proper validation of the user-supplied file. If a user opens a malicious file, an attacker can leverage this vulnerability to execute code in the context of the current process.
- 7.8 High severity
DIAScreen: Out-of-bounds Write
Delta Electronics DIAScreen lacks proper validation of the user-supplied file. If a user opens a malicious file, an attacker can leverage this vulnerability to execute code in the context of the current process.
- 7.8 High severity
DIAScreen: Out-of-bounds Write
Delta Electronics DIAScreen lacks proper validation of the user-supplied file. If a user opens a malicious file, an attacker can leverage this vulnerability to execute code in the context of the current process.
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF The previous commit 954d1fa1ac93 ("macvlan: Add netlink attribute for broadcast cutoff") added one additional attribute named IFLA_
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mvpp2_main: fix possible OOB write in mvpp2_ethtool_get_rxnfc() rules is allocated in ethtool_get_rxnfc and the size is determined by rule_cnt from user space. So rule_cnt needs
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: drm/msm/hdmi: fix memory corruption with too many bridges Add the missing sanity check on the bridge counter to avoid corrupting data beyond the fixed-sized bridge array in case there are ever
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix out-of-bounds dynptr write in bpf_crypto_crypt Stanislav reported that in bpf_crypto_crypt() the destination dynptr's size is not validated to be at least as large as the source dynpt
- 7.8 High severity
Circuit Design Suite: Out-of-bounds Write
There is a memory corruption vulnerability due to an out of bounds write in XML_Serialize() when using SymbolEditor in NI Circuit Design Suite. This vulnerability may result in information disclosure or arbitrary code execution. Successful exploitation require
- 9.8 Critical severity
OpenSSL: Out-of-bounds Read
Issue summary: An application trying to decrypt CMS messages encrypted using password based encryption can trigger an out-of-bounds read and write. Impact summary: This out-of-bounds read may trigger a crash which leads to Denial of Service for an application.
- 7.8 High severity
Ogre: Out-of-bounds Write
A security flaw has been discovered in OGRECave Ogre up to 14.4.1. This issue affects the function STBIImageCodec::encode of the file /ogre/PlugIns/STBICodec/src/OgreSTBICodec.cpp of the component Image Handler. The manipulation results in heap-based buffer ov
- 7.5 High severity
BSAFE Micro Edition Suite: Out-of-bounds Write
Dell BSAFE Micro Edition Suite, versions prior to 5.0.2.3 contain an Out-of-bounds Write vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to denial of service.
- 7.1 High severity
NVIDIA CUDA Toolkit: Out-of-bounds Write
NVIDIA CUDA Toolkit for all platforms contains a vulnerability in nvJPEG where a local authenticated user may cause a GPU out-of-bounds write by providing certain image dimensions. A successful exploit of this vulnerability may lead to denial of service and in
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: fuse: Block access to folio overlimit syz reported a slab-out-of-bounds Write in fuse_dev_do_write. When the number of bytes to be retrieved is truncated to the upper limit by fc->max_pages an
- 8.8 High severity
DIR-513: Out-of-bounds Write
A security vulnerability has been detected in D-Link DIR-513 A1FW110. Affected is an unknown function of the file /goform/formWPS. Such manipulation of the argument webpage leads to buffer overflow. The attack may be performed from remote. The exploit has been
- 9.8 Critical severity
DCS-935L: Out-of-bounds Write
A vulnerability was found in D-Link DCS-935L up to 1.13.01. The impacted element is the function sub_402280 of the file /HNAP1/. The manipulation of the argument HNAP_AUTH/SOAPAction results in stack-based buffer overflow. The attack may be launched remotely.
- 8.8 High severity
BL-AC2100: Out-of-bounds Write
A security flaw has been discovered in B-Link BL-AC2100 up to 1.0.3. Affected by this issue is the function delshrpath of the file /goform/set_delshrpath_cfg of the component Web Management Interface. The manipulation of the argument Type results in stack-base
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: fix list corruption after hardware restart Since stations are recreated from scratch, all lists that wcids are added to must be cleared before calling ieee80211_restart_hw.
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result() If the ssid->datalen is more than IEEE80211_MAX_SSID_LEN (32) it would lead to memory corruption so add some bounds checking
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix buffer free/clear order in deferred receive path Fix a use-after-free window by correcting the buffer release sequence in the deferred receive path. The code freed the RQ buffe
- 7.8 High severity
Linux: Out-of-bounds Write
In the Linux kernel, the following vulnerability has been resolved: platform/x86: asus-wmi: Fix racy registrations asus_wmi_register_driver() may be called from multiple drivers concurrently, which can lead to the racy list operations, eventually corrupting th