Common Weakness Enumeration
CWE-787
Allowed-with-ReviewOut-of-bounds Write
Abstraction: Base · Status: Draft
The product writes data past the end, or before the beginning, of the intended buffer.
15185 vulnerabilities reference this CWE, most recent first.
CVE-2021-4478 (GCVE-0-2021-4478)
Vulnerability from cvelistv5 – Published: 2026-06-02 19:17 – Updated: 2026-06-03 18:38
VLAI
EPSS
VEX
Title
Dräger CC-Vision Basic and CC-Vision E-Cal Out-of-Bounds Write via Malicious GDT File
Summary
Dräger CC-Vision Basic before 7.5.3 and Dräger CC-Vision E-Cal before 7.2.5.0 contain an out-of-bounds write vulnerability when loading .gdt files. A crafted .gdt file can trigger a buffer overflow during file parsing, allowing an attacker to crash the application or execute malicious code on the underlying system.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://static.draeger.com/security/download/2021… | vendor-advisory |
| https://www.vulncheck.com/advisories/dr-ger-cc-vi… | third-party-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Dräger | CC-Vision Basic |
Affected:
0 , < 7.5.3
(custom)
|
|
| Dräger | CC-Vision E-Cal |
Affected:
0 , < 7.2.5.0
(custom)
|
Date Public
2021-03-02 00:00
Credits
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CVE-2021-4090 (GCVE-0-2021-4090)
Vulnerability from cvelistv5 – Published: 2022-02-18 00:00 – Updated: 2026-05-12 10:12
VLAI
EPSS
VEX
Summary
An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel. Missing sanity may lead to a write beyond bmval[bmlen-1] in nfsd4_decode_bitmap4 in fs/nfsd/nfs4xdr.c. In this flaw, a local attacker with user privilege may gain access to out-of-bounds memory, leading to a system integrity and confidentiality threat.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | kernel |
Affected:
kernel 5.16 rc2
|
|
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
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CVE-2021-4034 (GCVE-0-2021-4034)
Vulnerability from cvelistv5 – Published: 2022-01-28 00:00 – Updated: 2025-10-21 23:15
VLAI
EPSS
VEX
Summary
A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine.
Severity
7.8 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - (CWE-787|CWE-125)
Assigner
References
13 references
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CVE-2021-3751 (GCVE-0-2021-3751)
Vulnerability from cvelistv5 – Published: 2021-09-15 06:40 – Updated: 2024-08-03 17:09
VLAI
EPSS
VEX
Title
Out-of-bounds Write in bfabiszewski/libmobi
Summary
libmobi is vulnerable to Out-of-bounds Write
Severity
9.6 (Critical)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://huntr.dev/bounties/fcb4383c-bc27-4b89-bfc… | x_refsource_CONFIRM |
| https://github.com/bfabiszewski/libmobi/commit/ab… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| bfabiszewski | bfabiszewski/libmobi |
Affected:
unspecified , ≤ 0.6
(custom)
|
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CVE-2021-3721 (GCVE-0-2021-3721)
Vulnerability from cvelistv5 – Published: 2022-04-22 20:30 – Updated: 2024-08-03 17:01
VLAI
EPSS
VEX
Summary
A denial of service vulnerability was reported in Lenovo PCManager prior to version 4.0.20.10282 that could allow an attacker with local access to trigger a blue screen error.
Severity
5.5 (Medium)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://iknow.lenovo.com.cn/detail/dc_200016.html | x_refsource_MISC |
Impacted products
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CVE-2021-3713 (GCVE-0-2021-3713)
Vulnerability from cvelistv5 – Published: 2021-08-25 18:40 – Updated: 2024-08-03 17:01
VLAI
EPSS
VEX
Summary
An out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emulation of QEMU in versions prior to 6.2.0-rc0. The device uses the guest supplied stream number unchecked, which can lead to out-of-bounds access to the UASDevice->data3 and UASDevice->status3 fields. A malicious guest user could use this flaw to crash QEMU or potentially achieve code execution with the privileges of the QEMU process on the host.
Severity
No CVSS data available.
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1994640 | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://security.netapp.com/advisory/ntap-2021092… | x_refsource_CONFIRM |
| https://www.debian.org/security/2021/dsa-4980 | vendor-advisoryx_refsource_DEBIAN |
| https://security.gentoo.org/glsa/202208-27 | vendor-advisoryx_refsource_GENTOO |
| https://lists.debian.org/debian-lts-announce/2022… | mailing-listx_refsource_MLIST |
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CVE-2021-3697 (GCVE-0-2021-3697)
Vulnerability from cvelistv5 – Published: 2022-07-06 15:06 – Updated: 2024-08-03 17:01
VLAI
EPSS
VEX
Summary
A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
Severity
No CVSS data available.
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1991687 | x_refsource_MISC |
| https://security.gentoo.org/glsa/202209-12 | vendor-advisoryx_refsource_GENTOO |
| https://security.netapp.com/advisory/ntap-2022093… | x_refsource_CONFIRM |
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CVE-2021-3696 (GCVE-0-2021-3696)
Vulnerability from cvelistv5 – Published: 2022-07-06 15:06 – Updated: 2024-08-03 17:01
VLAI
EPSS
VEX
Summary
A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
Severity
No CVSS data available.
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1991686 | x_refsource_MISC |
| https://security.gentoo.org/glsa/202209-12 | vendor-advisoryx_refsource_GENTOO |
| https://security.netapp.com/advisory/ntap-2022093… | x_refsource_CONFIRM |
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CVE-2021-3695 (GCVE-0-2021-3695)
Vulnerability from cvelistv5 – Published: 2022-07-06 15:06 – Updated: 2024-08-03 17:01
VLAI
EPSS
VEX
Summary
A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area. An attacker may take advantage of that to cause heap data corruption or eventually arbitrary code execution and circumvent secure boot protections. This issue has a high complexity to be exploited as an attacker needs to perform some triage over the heap layout to achieve signifcant results, also the values written into the memory are repeated three times in a row making difficult to produce valid payloads. This flaw affects grub2 versions prior grub-2.12.
Severity
No CVSS data available.
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1991685 | x_refsource_MISC |
| https://security.gentoo.org/glsa/202209-12 | vendor-advisoryx_refsource_GENTOO |
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CVE-2021-3638 (GCVE-0-2021-3638)
Vulnerability from cvelistv5 – Published: 2022-03-03 00:00 – Updated: 2024-08-03 17:01
VLAI
EPSS
VEX
Summary
An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.
Severity
No CVSS data available.
CWE
- CWE-787 - - Out-of-bounds Write
Assigner
References
6 references
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Mitigation MIT-3
Requirements
Strategy: Language Selection
- 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.
Mitigation MIT-4.1
Architecture and Design
Strategy: Libraries or Frameworks
- 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 [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.
Mitigation MIT-10
Operation
Build and Compilation
Strategy: Environment Hardening
- 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 [REF-1334] discusses canary-based detection in detail.
Mitigation MIT-9
Implementation
- Consider adhering to the following rules when allocating and managing an application's memory:
- Double check that the buffer is as large as specified.
- When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string.
- Check buffer boundaries if accessing the buffer in a loop and make sure there is no danger of writing past the allocated space.
- If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.
Mitigation MIT-11
Operation
Build and Compilation
Strategy: Environment Hardening
- Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
- Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
- For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
Mitigation MIT-12
Operation
Strategy: Environment Hardening
- 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 [REF-60] [REF-61]. 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 [REF-1336].
Mitigation MIT-13
Implementation
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
No CAPEC attack patterns related to this CWE.