Common Weakness Enumeration

CWE-125

Allowed

Out-of-bounds Read

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product reads data past the end, or before the beginning, of the intended buffer.

4530 vulnerabilities reference this CWE, most recent first.

CVE-2021-4156 (GCVE-0-2021-4156)

Vulnerability from cvelistv5 – Published: 2022-03-23 00:00 – Updated: 2025-12-11 12:06
VLAI
Summary
An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most likely cause a crash but could potentially leak memory information that could be used in further exploitation of other flaws.
Severity
No CVSS data available.
CWE
Assigner
redhat CNA
References
Impacted products
Vendor Product Version
n/a libsndfile Affected: libsndfile 1.1.0
Show details on NVD website
To clipboard 

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CVE-2021-4093 (GCVE-0-2021-4093)

Vulnerability from cvelistv5 – Published: 2022-02-18 17:50 – Updated: 2024-08-03 17:16
VLAI
Summary
A flaw was found in the KVM's AMD code for supporting the Secure Encrypted Virtualization-Encrypted State (SEV-ES). A KVM guest using SEV-ES can trigger out-of-bounds reads and writes in the host kernel via a malicious VMGEXIT for a string I/O instruction (for example, outs or ins) using the exit reason SVM_EXIT_IOIO. This issue results in a crash of the entire system or a potential guest-to-host escape scenario.
Severity
No CVSS data available.
CWE
Assigner
redhat CNA
References
Impacted products
Vendor Product Version
n/a kernel Affected: kernel 5.15
Show details on NVD website
To clipboard 

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CVE-2021-4048 (GCVE-0-2021-4048)

Vulnerability from cvelistv5 – Published: 2021-12-08 21:24 – Updated: 2024-08-03 17:16
VLAI
Summary
An out-of-bounds read flaw was found in the CLARRV, DLARRV, SLARRV, and ZLARRV functions in lapack through version 3.10.0, as also used in OpenBLAS before version 0.3.18. Specially crafted inputs passed to these functions could cause an application using lapack to crash or possibly disclose portions of its memory.
Severity
No CVSS data available.
CWE
Assigner
redhat CNA
References
Impacted products
Vendor Product Version
n/a lapack Affected: lapack through version 3.10.0
Show details on NVD website
To clipboard 

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CVE-2021-3998 (GCVE-0-2021-3998)

Vulnerability from cvelistv5 – Published: 2022-08-24 00:00 – Updated: 2026-10-14 09:54
VLAI
Summary
A flaw was found in glibc. The realpath() function can mistakenly return an unexpected value, potentially leading to information leakage and disclosure of sensitive data.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-09 14:59 UTC
CWE
Assigner
redhat CNA
References
Impacted products
Vendor Product Version
n/a glibc Affected: Affects glibc v2.33 and above.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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CVE-2021-3947 (GCVE-0-2021-3947)

Vulnerability from cvelistv5 – Published: 2022-02-18 17:50 – Updated: 2024-08-03 17:09
VLAI
Summary
A stack-buffer-overflow was found in QEMU in the NVME component. The flaw lies in nvme_changed_nslist() where a malicious guest controlling certain input can read out of bounds memory. A malicious user could use this flaw leading to disclosure of sensitive information.
Severity
No CVSS data available.
CWE
Assigner
redhat CNA
References
Impacted products
Vendor Product Version
n/a QEMU Affected: qemu-kvm 6.2.0-rc2
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CVE-2021-3881 (GCVE-0-2021-3881)

Vulnerability from cvelistv5 – Published: 2021-10-15 13:40 – Updated: 2024-08-03 17:09
VLAI
Title
Out-of-bounds Read in bfabiszewski/libmobi
Summary
libmobi is vulnerable to Out-of-bounds Read
Severity
7.1 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
CWE
Assigner
@huntrdev CNA
References
Impacted products
Vendor Product Version
bfabiszewski bfabiszewski/libmobi Affected: unspecified , ≤ 0.7 (custom)
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CVE-2021-3839 (GCVE-0-2021-3839)

Vulnerability from cvelistv5 – Published: 2022-08-23 15:52 – Updated: 2024-08-03 17:09
VLAI
Summary
A flaw was found in the vhost library in DPDK. Function vhost_user_set_inflight_fd() does not validate `msg->payload.inflight.num_queues`, possibly causing out-of-bounds memory read/write. Any software using DPDK vhost library may crash as a result of this vulnerability.
Severity
No CVSS data available.
CWE
  • CWE-125 - - Out-of-bounds Read | CWE-787 - Out-of-bounds Write
Assigner
redhat CNA
References
Impacted products
Vendor Product Version
n/a dpdk Affected: Fixed in dpdk v22.03
Show details on NVD website
To clipboard 

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CVE-2021-3753 (GCVE-0-2021-3753)

Vulnerability from cvelistv5 – Published: 2022-02-16 00:00 – Updated: 2024-08-03 17:09
VLAI
Summary
A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality.
Severity
No CVSS data available.
CWE
Assigner
redhat CNA
References
Impacted products
Vendor Product Version
n/a kernel Affected: Linux kernel 5.15-rc1
Show details on NVD website
To clipboard 

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CVE-2021-3743 (GCVE-0-2021-3743)

Vulnerability from cvelistv5 – Published: 2022-03-04 15:52 – Updated: 2024-08-03 17:01
VLAI
Summary
An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel. A missing sanity check allows a local attacker to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.
Severity
No CVSS data available.
CWE
Assigner
redhat CNA
References
Impacted products
Vendor Product Version
n/a Kernel Affected: Affects linux kernel v5.14.0-rc6 and above.
Show details on NVD website
To clipboard 

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CVE-2021-3643 (GCVE-0-2021-3643)

Vulnerability from cvelistv5 – Published: 2022-05-02 18:46 – Updated: 2024-08-03 17:01
VLAI
Summary
A flaw was found in sox 14.4.1. The lsx_adpcm_init function within libsox leads to a global-buffer-overflow. This flaw allows an attacker to input a malicious file, leading to the disclosure of sensitive information.
Severity
No CVSS data available.
CWE
Assigner
redhat CNA
References
Impacted products
Vendor Product Version
n/a sox Affected: sox 14.4.1
Show details on NVD website
To clipboard 

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Mitigation MIT-5
Implementation

Strategy: Input Validation

  • 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.
Mitigation
Architecture and Design

Strategy: Language Selection

Use a language that provides appropriate memory abstractions.

CAPEC-540: Overread Buffers

An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

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