CWE-122
Heap-based Buffer Overflow
Description
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
Hierarchy (View 1000)
Related attack patterns (CAPEC)
CAPEC-92
CVEs mapped to this weakness (568)
page 7 of 29| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2026-48131 | — | Hig | 0.53 | 8.1 | 0.03 | May 26, 2026 | The VPN service may mishandle an unexpected IKE fragment value received on the IKE port 500/UDP during the early stage of a connection attempt. This can cause the service to terminate unexpectedly, resulting in denial of service (temporary disruption of VPN-related… | |
| CVE-2026-9256 | Hig | 0.53 | 8.1 | 0.04 | May 22, 2026 | NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when a rewrite directive uses a regex pattern with distinct, overlapping Perl-Compatible Regular Expression (PCRE) captures (for example, ^/((.*))$) and a… | ||
| CVE-2026-45584 | Hig | 0.53 | 8.1 | 0.01 | May 20, 2026 | Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network. | ||
| CVE-2026-8711 | Hig | 0.53 | 8.1 | 0.01 | May 19, 2026 | NGINX JavaScript has a vulnerability when the js_fetch_proxy directive is configured with at least one client-controlled NGINX variable (for example, $http_*, $arg_*, $cookie_*) and a location invoking the ngx.fetch() operation from NGINX JavaScript. An unauthenticated attacker… | ||
| CVE-2026-42945 | Hig | 0.53 | 8.1 | 0.61 | May 13, 2026 | NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when the rewrite directive is followed by a rewrite, if, or set directive and an unnamed Perl-Compatible Regular Expression (PCRE) capture (for example, $1,… | ||
| CVE-2026-42512 | Hig | 0.53 | 8.1 | 0.01 | Apr 30, 2026 | As dhclient is building an environment to pass to dhclient-script, it may need to resize the array of string pointers. The code which expands the array incorrectly calculates its new size when requesting memory, resulting in a heap buffer overrun. A specially crafted packet… | ||
| CVE-2026-35547 | Hig | 0.53 | 8.1 | 0.00 | Apr 30, 2026 | When processing the header of an incoming message, libnv failed to properly validate the message size. The lack of validation allows a malicious program to write outside the bounds of a heap allocation. This can trigger a crash or system panic, and it may be possible for an… | ||
| CVE-2026-22828 | Hig | 0.53 | 8.1 | 0.01 | Apr 14, 2026 | A heap-based buffer overflow vulnerability in Fortinet FortiAnalyzer Cloud 7.6.2 through 7.6.4, FortiManager Cloud 7.6.2 through 7.6.4 may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests. Successful exploitation… | ||
| CVE-2026-23750 | Hig | 0.53 | 8.1 | 0.00 | Feb 26, 2026 | Golioth Pouch version 0.1.0, prior to commit 1b2219a1, contains a heap-based buffer overflow in BLE GATT server certificate handling. server_cert_write() allocates a heap buffer of size CONFIG_POUCH_SERVER_CERT_MAX_LEN when receiving the first fragment, then appends subsequent… | ||
| CVE-2025-25249 | Hig | 0.53 | 8.1 | 0.01 | Jan 13, 2026 | A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiOS 6.4 all versions, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5… | ||
| CVE-2025-61553 | Hig | 0.53 | 8.2 | 0.00 | Oct 16, 2025 | An out-of-bounds write in VirtIO network device emulation in BitVisor from commit 108df6 (2020-05-20) to commit 480907 (2025-07-06) allows local attackers to cause a denial of service (host hypervisor crash) via a crafted PCI configuration space access. Given it's a heap… | ||
| CVE-2025-1943 | Hig | 0.53 | 8.2 | 0.00 | Mar 4, 2025 | Memory safety bugs present in Firefox 135 and Thunderbird 135. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 136 and… | ||
| CVE-2023-31276 | Hig | 0.53 | 8.2 | 0.00 | Feb 12, 2025 | Heap-based buffer overflow in BMC Firmware for the Intel(R) Server Board S2600WF, Intel(R) Server Board S2600ST, Intel(R) Server Board S2600BP, before version 02.01.0017 and Intel(R) Server Board M50CYP and Intel(R) Server Board D50TNP before version R01.01.0009 may allow a… | ||
| CVE-2024-6873 | Hig | 0.53 | 8.1 | 0.01 | Aug 1, 2024 | It is possible to crash or redirect the execution flow of the ClickHouse server process from an unauthenticated vector by sending a specially crafted request to the ClickHouse server native interface. This redirection is limited to what is available within a 256-byte range of… | ||
| CVE-2023-5404 | — | Hig | 0.53 | 8.1 | 0.01 | Apr 17, 2024 | Server receiving a malformed message can cause a pointer to be overwritten which can result in a remote code execution or failure. See Honeywell Security Notification for recommendations on upgrading and versioning. | |
| CVE-2023-5400 | — | Hig | 0.53 | 8.1 | 0.01 | Apr 17, 2024 | Server receiving a malformed message based on a using the specified key values can cause a heap overflow vulnerability which could lead to an attacker performing remote code execution or causing a failure. See Honeywell Security Notification for recommendations on upgrading… | |
| CVE-2024-25262 | — | Hig | 0.53 | 8.1 | 0.01 | Feb 29, 2024 | texlive-bin commit c515e was discovered to contain heap buffer overflow via the function ttfLoadHDMX:ttfdump. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted TTF file. | |
| CVE-2023-6779 | Hig | 0.53 | 8.2 | 0.03 | Jan 31, 2024 | An off-by-one heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when these functions are called with a message bigger than INT_MAX bytes, leading to an… | ||
| CVE-2026-49840 | Cri | 0.52 | 9.1 | 0.00 | Jun 9, 2026 | FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.1, esl_recv_event() parses Content-Length with atol() and passes the… | ||
| CVE-2026-0059 | Hig | 0.52 | 8.0 | 0.00 | Jun 1, 2026 | In multiple functions of sdp_discovery.cc, there is a possible way to achieve code execution due to a heap buffer overflow. This could lead to remote (proximal/adjacent) code execution with no additional execution privileges needed. User interaction is not needed for… |
- risk 0.53cvss 8.1epss 0.03
The VPN service may mishandle an unexpected IKE fragment value received on the IKE port 500/UDP during the early stage of a connection attempt. This can cause the service to terminate unexpectedly, resulting in denial of service (temporary disruption of VPN-related…
- risk 0.53cvss 8.1epss 0.04
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when a rewrite directive uses a regex pattern with distinct, overlapping Perl-Compatible Regular Expression (PCRE) captures (for example, ^/((.*))$) and a…
- risk 0.53cvss 8.1epss 0.01
Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network.
- risk 0.53cvss 8.1epss 0.01
NGINX JavaScript has a vulnerability when the js_fetch_proxy directive is configured with at least one client-controlled NGINX variable (for example, $http_*, $arg_*, $cookie_*) and a location invoking the ngx.fetch() operation from NGINX JavaScript. An unauthenticated attacker…
- risk 0.53cvss 8.1epss 0.61
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when the rewrite directive is followed by a rewrite, if, or set directive and an unnamed Perl-Compatible Regular Expression (PCRE) capture (for example, $1,…
- risk 0.53cvss 8.1epss 0.01
As dhclient is building an environment to pass to dhclient-script, it may need to resize the array of string pointers. The code which expands the array incorrectly calculates its new size when requesting memory, resulting in a heap buffer overrun. A specially crafted packet…
- risk 0.53cvss 8.1epss 0.00
When processing the header of an incoming message, libnv failed to properly validate the message size. The lack of validation allows a malicious program to write outside the bounds of a heap allocation. This can trigger a crash or system panic, and it may be possible for an…
- risk 0.53cvss 8.1epss 0.01
A heap-based buffer overflow vulnerability in Fortinet FortiAnalyzer Cloud 7.6.2 through 7.6.4, FortiManager Cloud 7.6.2 through 7.6.4 may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests. Successful exploitation…
- risk 0.53cvss 8.1epss 0.00
Golioth Pouch version 0.1.0, prior to commit 1b2219a1, contains a heap-based buffer overflow in BLE GATT server certificate handling. server_cert_write() allocates a heap buffer of size CONFIG_POUCH_SERVER_CERT_MAX_LEN when receiving the first fragment, then appends subsequent…
- risk 0.53cvss 8.1epss 0.01
A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiOS 6.4 all versions, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5…
- risk 0.53cvss 8.2epss 0.00
An out-of-bounds write in VirtIO network device emulation in BitVisor from commit 108df6 (2020-05-20) to commit 480907 (2025-07-06) allows local attackers to cause a denial of service (host hypervisor crash) via a crafted PCI configuration space access. Given it's a heap…
- risk 0.53cvss 8.2epss 0.00
Memory safety bugs present in Firefox 135 and Thunderbird 135. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 136 and…
- risk 0.53cvss 8.2epss 0.00
Heap-based buffer overflow in BMC Firmware for the Intel(R) Server Board S2600WF, Intel(R) Server Board S2600ST, Intel(R) Server Board S2600BP, before version 02.01.0017 and Intel(R) Server Board M50CYP and Intel(R) Server Board D50TNP before version R01.01.0009 may allow a…
- risk 0.53cvss 8.1epss 0.01
It is possible to crash or redirect the execution flow of the ClickHouse server process from an unauthenticated vector by sending a specially crafted request to the ClickHouse server native interface. This redirection is limited to what is available within a 256-byte range of…
- risk 0.53cvss 8.1epss 0.01
Server receiving a malformed message can cause a pointer to be overwritten which can result in a remote code execution or failure. See Honeywell Security Notification for recommendations on upgrading and versioning.
- risk 0.53cvss 8.1epss 0.01
Server receiving a malformed message based on a using the specified key values can cause a heap overflow vulnerability which could lead to an attacker performing remote code execution or causing a failure. See Honeywell Security Notification for recommendations on upgrading…
- risk 0.53cvss 8.1epss 0.01
texlive-bin commit c515e was discovered to contain heap buffer overflow via the function ttfLoadHDMX:ttfdump. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted TTF file.
- risk 0.53cvss 8.2epss 0.03
An off-by-one heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when these functions are called with a message bigger than INT_MAX bytes, leading to an…
- risk 0.52cvss 9.1epss 0.00
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.1, esl_recv_event() parses Content-Length with atol() and passes the…
- risk 0.52cvss 8.0epss 0.00
In multiple functions of sdp_discovery.cc, there is a possible way to achieve code execution due to a heap buffer overflow. This could lead to remote (proximal/adjacent) code execution with no additional execution privileges needed. User interaction is not needed for…