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.

11291 vulnerabilities reference this CWE, most recent first.

CVE-2026-12969 (GCVE-0-2026-12969)

Vulnerability from cvelistv5 – Published: 2026-06-23 13:28 – Updated: 2026-06-23 15:04
VLAI
Title
Dnsmasq: dnsmasq: out-of-bounds read in find_soa() due to missing extrabytes validation
Summary
An out-of-bounds read vulnerability exists in dnsmasq's find_soa() function in src/rfc1035.c. When parsing NS section records, extract_name() is called with extrabytes=0, failing to validate that 10 additional bytes exist for fixed-length DNS record fields. A remote attacker controlling a DNS zone can exploit this via a crafted NXDOMAIN response to cause a 10-byte heap out-of-bounds read, potentially accessing stale data from prior transactions.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-12969 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2491663 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-05-10 00:00
Credits
Red Hat would like to thank dolitli for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-12897 (GCVE-0-2026-12897)

Vulnerability from cvelistv5 – Published: 2026-06-25 17:47 – Updated: 2026-06-25 18:31
VLAI
Title
Out-of-bounds read in Horner Automation Cscape
Summary
Horner Automation Cscape versions prior to 10.2 SP3 are vulnerable to an Out-of-Bounds Read vulnerability through parsing CSP files. Successful exploitation of this vulnerability could allow an attacker to disclose information and execute arbitrary code.
Severity
8.4 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Horner Automation Cscape Affected: 0 , < 10.2 SP3 (custom)
Create a notification for this product.
Credits
Michael Heinzl reported this vulnerability to CISA.
Show details on NVD website
To clipboard 

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CVE-2026-12892 (GCVE-0-2026-12892)

Vulnerability from cvelistv5 – Published: 2026-06-23 19:53 – Updated: 2026-06-24 13:39
VLAI
Title
Gstreamer1-plugins-bad: gstreamer1-plugins-bad: 1-byte heap out-of-bounds read in h.264 nal extension slice parser
Summary
A flaw was found in GStreamer's gst-plugins-bad package. When processing a specially crafted H.264 video file containing malformed MVC or SVC extension slice NAL units, a 1-byte heap out-of-bounds read can occur during parsing. This happens when the parser attempts to check slice boundary information without first verifying that the NAL unit contains enough data beyond the extension header. An attacker could exploit this by tricking a user into opening a malicious H.264 video file, potentially causing the application to crash or leak a single byte of heap memory.
Severity
4.4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Date Public
2026-06-22 00:00
Credits
Red Hat would like to thank Ariba Afroz (CoE-CNDS Lab, VJTI, Mumbai, India), Dr. Faruk Kazi (CoE-CNDS Lab, VJTI, Mumbai, India), and Ramesh Adhikari (CoE-CNDS Lab, VJTI, Mumbai, India) for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-12891 (GCVE-0-2026-12891)

Vulnerability from cvelistv5 – Published: 2026-06-23 19:53 – Updated: 2026-06-24 13:08
VLAI
Title
Gstreamer1-plugins-bad: gstreamer1-plugins-bad: global buffer overflow (oob read) in h.266/vvc vui parameter parser
Summary
A flaw was found in the GStreamer gst-plugins-bad package. When processing a malformed H.266/VVC video stream with a crafted aspect ratio indicator value, the H.266 parser performs an out-of-bounds read of up to 8 bytes from adjacent memory. This flaw allows an attacker to craft a malicious H.266 video file or stream that, when processed by a GStreamer-based application, could leak limited memory contents through video metadata, potentially exposing sensitive information from the application's address space.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
 Create a notification for this product.
Date Public
2026-06-23 00:00
Credits
Red Hat would like to thank Dr. Faruk Kazi (CoE-CNDS Lab, VJTI, Mumbai, India) and Ramesh Adhikari (CoE-CNDS Lab, VJTI, Mumbai, India) for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-12478 (GCVE-0-2026-12478)

Vulnerability from cvelistv5 – Published: 2026-07-14 09:26 – Updated: 2026-07-15 14:42
VLAI
Title
Libsoup: incomplete fix for cve-2026-0716: out-of-bounds read in libsoup websocket frame processing (unmasked path)
Summary
The fix for CVE-2026-0716 (commit 6ff7ef0, libsoup 3.6.6) placed the integer overflow guard inside the if (masked) block, leaving unmasked server-to-client frames unprotected. A malicious WebSocket server can send a crafted unmasked frame with a payload length near UINT64_MAX to trigger an OOB read in a libsoup-based client when max_incoming_payload_size is set to 0.
Severity
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
 Create a notification for this product.
Date Public
2026-04-27 00:00
Credits
Red Hat would like to thank Adel Bouachraoui and Gerard Capdevila for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-12340 (GCVE-0-2026-12340)

Vulnerability from cvelistv5 – Published: 2026-06-25 19:36 – Updated: 2026-06-26 13:59
VLAI
Title
Out-of-bounds heap read in SM2/SM3 certificate Subject Key Identifier computation
Summary
Out-of-bounds heap read during SM2/SM3 certificate signature verification. When parsing a certificate with an SM3wSM2 signature, the Subject Key Identifier computation reads the trailing 65 bytes of the public key without checking that the key is at least that long. A public key shorter than 65 bytes results in an out-of-bounds heap read, leading to a potential crash (denial of service); there is no out-of-bounds write. Note this only affects builds with SM2 support (--enable-sm2 or --enable-all).
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
wolfSSL wolfSSL Affected: 5.6.4 , ≤ 5.9.1 (semver)
Create a notification for this product.
Credits
David Pokora, Trail of Bits (in collaboration with Anthropic)
Show details on NVD website
To clipboard 

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CVE-2026-12087 (GCVE-0-2026-12087)

Vulnerability from cvelistv5 – Published: 2026-06-15 21:11 – Updated: 2026-06-16 15:59
VLAI
Title
Socket versions before 2.041 for Perl have an out-of-bounds heap read
Summary
Socket versions before 2.041 for Perl have an out-of-bounds heap read. In Socket.xs, pack_ip_mreq_source() checks the length of its source argument before the argument is read, so the check tests the byte length carried over from the preceding multiaddr argument instead. Both addresses occupy a 4-byte field, so a valid multiaddr lets a source of any length pass the check, and the source is then copied into the 4-byte imr_sourceaddr field with a fixed-size copy. A source shorter than 4 bytes is not rejected, and the copy reads up to 3 bytes past the end of its buffer. Calling pack_ip_mreq_source() with a source value shorter than 4 bytes copies adjacent heap memory into the returned packed structure.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-125 - Out-of-bounds Read
  • CWE-805 - Buffer Access with Incorrect Length Value
Assigner
References
Impacted products
Vendor Product Version
PEVANS Socket Affected: 0 , < 2.041 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-11786 (GCVE-0-2026-11786)

Vulnerability from cvelistv5 – Published: 2026-06-09 12:57 – Updated: 2026-06-30 07:57
VLAI
Title
389-ds-base: 389-ds-base: heap out-of-bounds read in ldif parser str2entry_state_information_from_type()
Summary
A flaw was found in 389 Directory Server. The LDIF parser reads past the end of a heap buffer when processing attribute types with trailing semicolons during database import, causing an out-of-bounds read detectable under memory instrumentation.
Severity
1.9 (Low)
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-11786 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2485426 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-04-16 00:00
Credits
This issue was discovered by Ian Murphy (Red Hat).
Show details on NVD website
To clipboard 

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CVE-2026-11404 (GCVE-0-2026-11404)

Vulnerability from cvelistv5 – Published: 2026-07-09 15:13 – Updated: 2026-07-10 15:40
VLAI
Title
Cesanta Mongoose before 7.22 Out-of-Bounds Read in MG_TLS_BUILTIN ClientHello Session ID Parsing
Summary
Cesanta Mongoose before 7.22 contains an out-of-bounds read in the built-in TLS server function mg_tls_server_recv_hello(), which uses an attacker-controlled session_id_len byte from a TLS ClientHello as a buffer index without validating it against the length of received data. A remote, unauthenticated attacker can send a single crafted ClientHello with an oversized session id length to read past the receive buffer, crashing any HTTPS, MQTTS, or WSS service built on MG_TLS_BUILTIN.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Cesanta Mongoose Affected: 0 , < 7.22 (custom)
Create a notification for this product.
Date Public
2026-07-09 00:00
Credits
Shukhratbek Uraiimov
Show details on NVD website
To clipboard 

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CVE-2026-10817 (GCVE-0-2026-10817)

Vulnerability from cvelistv5 – Published: 2026-06-30 12:58 – Updated: 2026-06-30 13:28
VLAI
Title
Insufficient input validation leading to memory overread
Summary
Insufficient input validation leading to memory overread in NetScaler ADC and NetScaler Gateway if the TCP TimeStamp is enabled in TCP Profile and is associated with the virtual server (of type LB, CS, VPN) or the service configured on NetScaler
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
NetScaler ADC Affected: 14.1 , < 72.61 (patch)
Affected: 13.1 , < 63.18 (patch)
Affected: 14.1 FIPS , < 72.61 (patch)
Affected: 13.1 FIPS and NDcPP , < 37.272 (patch)
Create a notification for this product.
NetScaler Gateway Affected: 14.1 , < 72.61 (patch)
Affected: 13.1 , < 63.18 (patch)
Create a notification for this product.
Date Public
2026-06-30 12:52
Show details on NVD website
To clipboard 

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            "Recovery": "NOT_DEFINED",
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            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
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            "valueDensity": "NOT_DEFINED",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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              "description": "CWE-125 Out-of-bounds read",
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        "orgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
        "shortName": "NetScaler"
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      "references": [
        {
          "url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604"
        }
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      "source": {
        "discovery": "UNKNOWN"
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      "title": "Insufficient input validation leading to memory overread",
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    "assignerShortName": "NetScaler",
    "cveId": "CVE-2026-10817",
    "datePublished": "2026-06-30T12:58:38.850Z",
    "dateReserved": "2026-06-04T05:49:25.173Z",
    "dateUpdated": "2026-06-30T13:28:19.305Z",
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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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