Common Weakness Enumeration

CWE-787

Allowed-with-Review

Out-of-bounds Write

Abstraction: Base · Status: Draft

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

15627 vulnerabilities reference this CWE, most recent first.

CVE-2026-56211 (GCVE-0-2026-56211)

Vulnerability from cvelistv5 – Published: 2026-06-19 16:28 – Updated: 2026-08-28 12:04
VLAI
Title
Libaom: libaom: remote code execution via svc layer context handling with attacker-controlled frames
Summary
A remote code execution vulnerability was found in libaom, the reference AV1 codec implementation. Insufficient bounds validation in the AV1 encoder's SVC (Scalable Video Coding) layer ID control allows an attacker to supply crafted video frame pixels that overlap with internal encoder layer context structures. In fork-based video processing services, an attacker can use this to hijack the cyclic refresh map pointer, brute-force the process base address via a crash oracle, and redirect control flow to achieve arbitrary command execution. Exploitation requires the target service to use libaom with SVC encoding enabled and accept attacker-supplied video frames.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-25 03:55 UTC
CWE
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux AI 3.3 for RHEL 9 Unaffected: 0:3.14.0-1.el9ai , < * (rpm)
    cpe:/a:redhat:enterprise_linux_ai:3.3::el9
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Red Hat Red Hat Enterprise Linux AI 3.4 for RHEL 9 Unaffected: 0:3.14.0-1.el9ai , < * (rpm)
    cpe:/a:redhat:enterprise_linux_ai:3.4::el9
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Red Hat Red Hat Enterprise Linux AI 3.5 for RHEL 9 Unaffected: 0:3.14.0-1.el9ai , < * (rpm)
    cpe:/a:redhat:enterprise_linux_ai:3.5::el9
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Red Hat Red Hat Hardened Images Unaffected: 3.14.0-0.1.hum1 , < * (rpm)
    cpe:/a:redhat:hummingbird:1
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Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1786611800 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
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Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1787076778 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
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Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1787077779 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
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Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1787076481 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
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Red Hat Red Hat AI Inference Server     cpe:/a:redhat:ai_inference_server:3
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Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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Date Public
2026-06-19 00:00
Show details on NVD website

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CVE-2026-56209 (GCVE-0-2026-56209)

Vulnerability from cvelistv5 – Published: 2026-06-19 16:28 – Updated: 2026-08-28 12:04
VLAI
Title
Libaom: libaom: arbitrary address write via svc layer context oob and cyclic refresh map pointer hijack
Summary
An arbitrary address write vulnerability was found in libaom, the reference AV1 codec implementation. A missing bounds check in the SVC (Scalable Video Coding) layer ID control function allows an attacker to inject an arbitrary pointer into the cyclic refresh map field via crafted image pixel values. The encoder then writes approximately 1,200 bytes at the attacker-controlled address. This is fully deterministic and does not require a separate information leak. An attacker who can supply frames to a network-facing libaom encoder with SVC enabled could exploit this for denial of service or potential code execution.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-25 03:55 UTC
CWE
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux AI 3.3 for RHEL 9 Unaffected: 0:3.14.0-1.el9ai , < * (rpm)
    cpe:/a:redhat:enterprise_linux_ai:3.3::el9
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Red Hat Red Hat Enterprise Linux AI 3.4 for RHEL 9 Unaffected: 0:3.14.0-1.el9ai , < * (rpm)
    cpe:/a:redhat:enterprise_linux_ai:3.4::el9
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Red Hat Red Hat Enterprise Linux AI 3.5 for RHEL 9 Unaffected: 0:3.14.0-1.el9ai , < * (rpm)
    cpe:/a:redhat:enterprise_linux_ai:3.5::el9
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Red Hat Red Hat Hardened Images Unaffected: 3.14.0-0.1.hum1 , < * (rpm)
    cpe:/a:redhat:hummingbird:1
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Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1786611800 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
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Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1787076778 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
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Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1787077779 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
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Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1787076481 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
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Red Hat Red Hat AI Inference Server     cpe:/a:redhat:ai_inference_server:3
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Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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Date Public
2026-06-19 00:00
Show details on NVD website

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CVE-2026-56114 (GCVE-0-2026-56114)

Vulnerability from cvelistv5 – Published: 2026-06-23 16:08 – Updated: 2026-07-28 01:49 X_Open Source
VLAI
Title
dhcpcd Stack Out-of-Bounds Write in dhcp6_makemessage()
Summary
dhcpcd through 10.3.2, fixed in commit 2f00c7b, contains a one-byte stack out-of-bounds write vulnerability in dhcp6_makemessage() in src/dhcp6.c that allows unauthenticated same-link attackers to write beyond a fixed local buffer by serializing an oversized RFC6603 OPTION_PD_EXCLUDE option body. Attackers can send a crafted DHCPv6 ADVERTISE message containing an IA_PD IAPREFIX /0 with a valid OPTION_PD_EXCLUDE using an exclude prefix length of /121 through /128 to trigger the out-of-bounds write and potentially corrupt adjacent stack memory.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-24 14:02 UTC
CWE
Impacted products
Vendor Product Version
NetworkConfiguration dhcpcd Affected: 0 , ≤ 10.3.2 (semver)
Unaffected: 2f00c7bfc408b6582d331932dfa47829c4819029 (git)
    cpe:2.3:a:dhcpcd_project:dhcpcd:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-06-22 00:00
Show details on NVD website

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CVE-2026-55958 (GCVE-0-2026-55958)

Vulnerability from cvelistv5 – Published: 2026-06-25 19:35 – Updated: 2026-06-26 13:58
VLAI
Title
Renesas TSIP TLS 1.3 transcript buffer out-of-bounds write in tsip_StoreMessage
Summary
Out-of-bounds write in the Renesas TSIP TLS 1.3 transcript buffer. In tsip_StoreMessage() the capacity check guarding the fixed message bag (MSGBAG_SIZE) sets an error code but fails to return, so execution falls through to an XMEMCPY that writes past the end of the buffer once the accumulated TLS 1.3 handshake transcript exceeds MSGBAG_SIZE (8 KB), corrupting adjacent heap state and potentially causing a remote denial of service crash. The bag is sized to hold a normal handshake, so this is reached only by an unusually large but valid certificate chain, or by a malicious or man-in-the-middle server sending an oversized handshake message to a client that does not strictly verify the chain. This only affects builds using the Renesas TSIP TLS port (WOLFSSL_RENESAS_TSIP_TLS) as a TLS 1.3 client on Renesas MCUs with TSIP hardware enabled, and is rated High within those builds. All other configurations are unaffected.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-26 13:58 UTC
CWE
Impacted products
Vendor Product Version
wolfSSL wolfSSL Affected: 5.4.0 , ≤ 5.9.1 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-55892 (GCVE-0-2026-55892)

Vulnerability from cvelistv5 – Published: 2026-06-25 15:32 – Updated: 2026-06-26 18:43
VLAI
Title
Vim: Out-of-bounds Write in Spell File Prefix Dump
Summary
Vim is an open source, command line text editor. Prior to 9.2.0662, the dump_prefixes() function in src/spell.c walks a spell-file prefix trie iteratively with a depth counter while dumping the prefixes that apply to a word. The counter is bounded only by the trie structure itself; it is never checked against the size of the fixed MAXWLEN-element stack arrays it indexes (prefix[], arridx[], curi[]). A crafted .spl file, loaded when the user dumps the word list, can drive the descent arbitrarily deep, so the function writes past the end of those arrays. This is a stack out-of-bounds write that corrupts the call frame and crashes the editor. This vulnerability is fixed in 9.2.0662.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-26 17:50 UTC
CWE
Impacted products
Vendor Product Version
vim vim Affected: < 9.2.0662
Create a notification for this product.
Show details on NVD website

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CVE-2026-55827 (GCVE-0-2026-55827)

Vulnerability from cvelistv5 – Published: 2026-07-10 19:47 – Updated: 2026-07-15 03:58
VLAI
Title
FreeRDP: Heap out-of-bounds write in RemoteFX (RFX) Cache Bitmap V3 decode
Summary
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.1, FreeRDP clients launched with the non-default /cache:codec:rfx option pass desktop stride and height to RemoteFX decoding for Cache Bitmap V3 data while allocating bitmap->data only for the smaller DstWidth and DstHeight in gdi_Bitmap_Decompress, allowing a malicious RDP server to trigger a heap out-of-bounds write with attacker-controlled offset and content. This issue is fixed in version 3.27.1.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-14 00:00 UTC
CWE
  • CWE-131 - Incorrect Calculation of Buffer Size
  • CWE-787 - Out-of-bounds Write
Impacted products
Vendor Product Version
FreeRDP FreeRDP Affected: < 3.27.1
Create a notification for this product.
Show details on NVD website

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CVE-2026-55737 (GCVE-0-2026-55737)

Vulnerability from cvelistv5 – Published: 2026-07-27 15:13 – Updated: 2026-07-28 09:55
VLAI
Title
Heap pointer corruption via signed/unsigned mismatch in LARGE_TUPLE_EXT decoding in erts external term format decoder
Summary
Signed to Unsigned Conversion Error and Out-of-bounds Write vulnerability in Erlang OTP erts allows an attacker who can supply a crafted Erlang external term format (ETF) binary to binary_to_term/1 to corrupt the BEAM heap pointer and crash the virtual machine. When decoding a LARGE_TUPLE_EXT term, the validation pass decoded_size() in erts/emulator/beam/external.c reads the 32-bit arity field as unsigned (get_uint32()), while the decode pass dec_term() reads the same field as a signed 32-bit integer (get_int32()) into an int. An arity wire value of 0x80000000 passes validation as 2147483648 but decodes as -2147483648, so the subsequent hp += n moves the heap allocation pointer backward. Neither pass enforces the runtime tuple-arity limit MAX_ARITYVAL. The result is an out-of-bounds heap write; in practice the VM detects an impossible heap size and aborts, denying service. The required padding is large when uncompressed but the compressed-ETF envelope shrinks it to a small payload on the wire. This issue affects OTP from OTP 25.0 before OTP 29.0.4, OTP 28.5.0.4 and OTP 27.3.4.15, corresponding to erts from 13.0 before 17.0.4, 16.4.0.4 and 15.2.7.11.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 18:34 UTC
CWE
  • CWE-195 - Signed to Unsigned Conversion Error
  • CWE-787 - Out-of-bounds Write
Assigner
Impacted products
Vendor Product Version
Erlang OTP Affected: 13.0 , < * (otp)
    cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
Create a notification for this product.
Erlang OTP Affected: 25.0 , < * (otp)
Affected: ebcbb97b4ec223464cac3d94375739a248ddef6e , < c5210b42a9d3d96f3d25601942ce8122be0f3761 (git)
    cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-55693 (GCVE-0-2026-55693)

Vulnerability from cvelistv5 – Published: 2026-06-25 15:34 – Updated: 2026-06-26 14:03
VLAI
Title
Vim: Out-of-bounds Write in Spell File Word Count
Summary
Vim is an open source, command line text editor. Prior to 9.2.0653, the tree_count_words() function in src/spellfile.c fills in the word-count fields of a spell-file word trie by walking it iteratively with a depth counter. The counter is bounded only by the trie structure itself; it is never checked against the size of the fixed MAXWLEN-element stack arrays it indexes (arridx[], curi[], wordcount[]). A crafted .spl/.sug file pair, loaded when the user invokes spell suggestion, can drive the descent arbitrarily deep, so the function writes past the end of those arrays. This is a stack out-of-bounds write that corrupts the call frame and crashes the editor. This vulnerability is fixed in 9.2.0653.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-26 14:02 UTC
CWE
Impacted products
Vendor Product Version
vim vim Affected: < 9.2.0653
Create a notification for this product.
Show details on NVD website

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CVE-2026-55687 (GCVE-0-2026-55687)

Vulnerability from cvelistv5 – Published: 2026-07-10 15:59 – Updated: 2026-07-10 20:58
VLAI
Title
ESF-IDF: Stack-Based Out-of-Bounds Write in JPEG Decoder DQT Marker Parsing
Summary
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. Versions 6.0.1, 5.5.4, 5.4.4, 5.3.5, and possibly prior contain an out-of-bounds write in jpeg_parse_dqt_marker() in components/esp_driver_jpeg/jpeg_parse_marker.c because the attacker-controlled DQT marker Tq nibble is used as an index into the qt_tbl array without validating that it is in the range 0..3, allowing malformed JPEG input to corrupt stack memory and reliably trigger a denial of service. This issue is fixed in version 6.0.2 and is expected to be fixed in versions 5.5.5, 5.4.5, and 5.3.6.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-10 20:53 UTC
CWE
Impacted products
Vendor Product Version
espressif esp-idf Affected: >= 6.0.0, < 6.0.2
Affected: >= 5.5.0, <= 5.5.4
Affected: >= 5.4.0, <= 5.4.4
Affected: <= 5.3.5
Create a notification for this product.
Show details on NVD website

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          "name": "https://github.com/espressif/esp-idf/commit/7ccfc00f39faf1b7e5919f45b56fe44ba699d7c1",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/espressif/esp-idf/commit/7ccfc00f39faf1b7e5919f45b56fe44ba699d7c1"
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        {
          "name": "https://github.com/espressif/esp-idf/commit/82c5c2dad45313786fb7e973059bc9094d95c3b2",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/espressif/esp-idf/commit/82c5c2dad45313786fb7e973059bc9094d95c3b2"
        },
        {
          "name": "https://github.com/espressif/esp-idf/commit/f2df45bcedef11354e83c31a9718d680a68422c4",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/espressif/esp-idf/commit/f2df45bcedef11354e83c31a9718d680a68422c4"
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        {
          "name": "https://github.com/espressif/esp-idf/releases/tag/v6.0.2",
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          "url": "https://github.com/espressif/esp-idf/releases/tag/v6.0.2"
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      "source": {
        "advisory": "GHSA-v6r2-f6p2-88cj",
        "discovery": "UNKNOWN"
      },
      "title": "ESF-IDF: Stack-Based Out-of-Bounds Write in JPEG Decoder DQT Marker Parsing"
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    "cveId": "CVE-2026-55687",
    "datePublished": "2026-07-10T15:59:31.646Z",
    "dateReserved": "2026-06-17T00:13:10.650Z",
    "dateUpdated": "2026-07-10T20:58:56.932Z",
    "state": "PUBLISHED"
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CVE-2026-55597 (GCVE-0-2026-55597)

Vulnerability from cvelistv5 – Published: 2026-07-01 19:03 – Updated: 2026-07-01 19:21
VLAI
Title
ImageMagick: Heap Buffer Over-Write in JP2 encoder when due to incorrect handling of arguments
Summary
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to version 7.1.2-26, an incorrect handling of arguments can cause a heap buffer over-write in the JP2 encoder. This issue has been fixed in version7.1.2-26.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-01 19:20 UTC
CWE
References
Impacted products
Vendor Product Version
ImageMagick ImageMagick Affected: < 7.1.2-26
Create a notification for this product.
Show details on NVD website

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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.