CWE-120— Buffer Copy without Checking Size (Classic Buffer Overflow)
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.— MITRE CWE catalog
4,706 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →
CVEs classified under CWE-120page 3 of 95
- CVE-2026-26846CRITICALCVSS 9.8EG 9.82026-10-16
Buffer Overflow vulnerability in WEINVEIW CO.,LTD EBPro v.6.10.01.510_20251022 allows a remote attacker to execute arbitrary code via the UtilityManagerEx.exe component
- CVE-2026-15340CRITICALCVSS 9.8EG 9.82026-10-09
lwIP SMTP client does not check the size of inputs, potentially allowing a buffer overflow.
- CVE-2026-82895CRITICALCVSS 9.8EG 9.82026-10-08
IBM Guardium Data Protection 12.0, 12.1, and 12.2 could allow a remote attacker to execute arbitrary code due to a buffer overflow.
- CVE-2026-84198CRITICALCVSS 9.8EG 9.82026-10-08
IBM Guardium Data Protection 12.0, 12.1, and 12.2 could allow a remote attacker to execute arbitrary code due to a buffer overflow.
- CVE-2026-84246CRITICALCVSS 9.8EG 9.82026-10-08
IBM Guardium Data Protection 12.0, 12.1, and 12.2 could allow a remote attacker to execute arbitrary code due to a buffer overflow.
- CVE-2026-76744CRITICALCVSS 9.8EG 9.82026-10-06
Buffer overflow vulnerabilities exist in the affected interface of AOS-S. Successful exploitation could allow an unauthenticated remote attacker to execute arbitrary code.
- CVE-2026-88775CRITICALCVSS 9.8EG 9.82026-09-27
Memory overflow vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 an…
- CVE-2026-76674CRITICALCVSS 9.8EG 9.82026-09-15
Buffer overflow vulnerabilities exist in the underlying operating system of HPE Networking EdgeConnect SD-WAN Gateways that could allow an unauthenticated remote attacker to execute arbitrary code. Successful exploitation could allow an at…
- CVE-2026-84609CRITICALCVSS 9.8EG 9.82026-09-14
A permissions issue was addressed with improved path validation. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An app may be able to modify protec…
- CVE-2026-84520CRITICALCVSS 9.8EG 9.82026-09-14
A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Golden Gate 27. A local attacker may be able to cause unexpected system termination or corrupt kernel memory.
- CVE-2026-86165CRITICALCVSS 9.8EG 9.82026-09-06
A vulnerability was found in Tenda HG10 300001138. This vulnerability affects the function formURL of the file /boaform/admin/formURL. Performing a manipulation of the argument Keywd/urlFQDN results in buffer overflow. The attack may be in…
- CVE-2026-85109CRITICALCVSS 9.8EG 9.82026-09-03
A vulnerability was determined in Tenda HG10 300001138. This issue affects the function formLogin of the file /boaform/formLogin of the component Boa Web Server. Executing a manipulation of the argument Username can lead to buffer overflow…
- CVE-2026-51934CRITICALCVSS 9.8EG 9.82026-09-01
Buffer Overflow vulnerability in Shenzhen Jixiang Tengda Technology Co., Ltd. Tenda A18 v.15.13.07.09 allows a remote attacker to execute arbitrary code via the fromSetCmdlineRun function
- CVE-2026-17040CRITICALCVSS 9.8EG 9.82026-08-20
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to a buffer overflow.
- CVE-2026-55209CRITICALCVSS 9.8EG 9.82026-08-18
resdata is software for reading and writing result files from the Eclipse reservoir simulator. Prior to 6.2.9, resdata insufficiently validates numeric fields, grid dimensions, keyword sizes, and array indexes while parsing untrusted GRDEC…
- CVE-2026-39254CRITICALCVSS 9.8EG 9.82026-08-17
Buffer Overflow vulnerability in SteelSeries GG (macOS) v.107.0.0 allows a remote attacker to execute arbitrary code via the libSSEdevice.dylib, CxAudioHidDevice::DeviceGetDescriptionString components
- CVE-2026-39255CRITICALCVSS 9.8EG 9.82026-08-17
Buffer Overflow vulnerability in SteelSeries GG (macOS) v.107.0.0 allows a remote attacker to execute arbitrary code via the libSSEdevice.dylib, dup_wcs components
- CVE-2025-41769CRITICALCVSS 9.8EG 9.82026-08-12
The device's PROFINET service is affected by a buffer overflow vulnerability that exists in the default configuration. An unauthenticated remote attacker could exploit this vulnerability to reboot the device or execute arbitrary code.
- CVE-2026-71958CRITICALCVSS 9.8EG 9.82026-08-08
D-Link DWR-M961 devices with hardware version C1 and software version 1.1.2_C1_202602110044 contain a buffer overflow vulnerability in the quicksetup.cgi interface. A remote attacker can write overly long strings to the test4, ssid2, and u…
- CVE-2026-71957CRITICALCVSS 9.8EG 9.82026-08-08
D-Link DWR-M961 devices with hardware version C1 and software version 1.1.2_C1_202602110044 contain a buffer overflow vulnerability in the app.cgi interface. A remote attacker can write an overly long string to the netAcc.addlist[].name fi…
- CVE-2026-64691CRITICALCVSS 9.8EG 9.82026-07-27
A buffer overflow was addressed with improved size validation. This issue is fixed in macOS Tahoe 26.6. An app may be able to cause unexpected system termination.
- CVE-2026-64767CRITICALCVSS 9.8EG 9.82026-07-27
A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sequoia 15.8.2, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote attacker may be able to cause unexpected system termination o…
- CVE-2026-43750CRITICALCVSS 9.8EG 9.82026-07-27
A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to execute arbitrary code out of its sandbox or with certain elevated pri…
- CVE-2026-43807CRITICALCVSS 9.8EG 9.82026-07-27
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, wa…
- CVE-2026-63887CRITICALCVSS 9.8EG 9.82026-07-19
In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf iscsi_encode_text_output() concatenates "key=value\0" records into login->rsp_buf, an 8192-byte …
- CVE-2026-51380CRITICALCVSS 9.8EG 9.82026-07-15
Buffer Overflow vulnerability in Tenda AC10 v3 (firmware V03.03.16.09) allows attackers to cause a permanent Denial of Service (DoS) or potentially execute remote code via the /cgi-bin/UploadCfg endpoint
- CVE-2026-51808CRITICALCVSS 9.8EG 9.82026-07-14
Buffer Overflow vulnerability in OpenHTJ2K v.0.18.4 and before allows an attacker to execute arbitrary code via the openhtj2k_decoder_impl::invoke, invoke_line_based, invoke_line_based_stream, and invoke_line_based_predecoded function in s…
- CVE-2026-29009CRITICALCVSS 9.8EG 9.82026-07-08
U-Boot before 2026.07-rc2 contains a buffer overflow vulnerability in nfs_readlink_reply() (net/nfs-common.c) when CONFIG_CMD_NFS is enabled, allowing a malicious or compromised NFS server to overflow the 2048-byte nfs_path_buff buffer by …
- CVE-2026-43994CRITICALCVSS 9.8EG 9.82026-06-18
Coturn is a free open source implementation of TURN and STUN Server. Versions prior to 4.10.0 contain a stack buffer overflow in decode_oauth_token_gcm(). A uint16_t nonce_len field read from an attacker-supplied OAuth access token (0-6553…
- CVE-2026-0126CRITICALCVSS 9.8EG 9.82026-06-16
In WC-Radio, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.
- CVE-2026-30141CRITICALCVSS 9.8EG 9.82026-06-09
An issue was discovered in bitbank2 AnimatedGIF v2.2.0. A buffer overflow in the DecodeLZW function allows remote attackers to cause a denial of service (crash) or potentially execute arbitrary code via a crafted GIF file.
- CVE-2026-9698CRITICALCVSS 9.8EG 9.82026-06-09
DBI versions before 1.648 for Perl saved errors in a limited-sized buffer. Error messages that were returned when RaiseError, PrintError or HandleError were set were written to a 200-byte buffer without a length limit. Attackers that can…
- CVE-2019-25741CRITICALCVSS 9.8EG 9.82026-06-04
Mobatek MobaXterm 12.1 contains a structured exception handling (SEH) based buffer overflow vulnerability in the username field of session files that allows remote attackers to execute arbitrary code. Attackers can craft a malicious MobaXt…
- CVE-2025-12686CRITICALCVSS 9.8EG 9.82026-05-27
Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in AdminCenter in Synology BeeStation OS before 1.3.2-65648 allows remote attackers to execute arbitrary code via unspecified vectors.
- CVE-2026-48686CRITICALCVSS 9.8EG 9.82026-05-26
FastNetMon Community Edition through 1.2.9 contains a stack-based buffer overflow in the BGP NLRI (Network Layer Reachability Information) decoder. The function decode_bgp_subnet_encoding_ipv4_raw() in src/bgp_protocol.cpp reads prefix_bit…
- CVE-2026-7854CRITICALCVSS 9.8EG 9.82026-05-05
A security vulnerability has been detected in D-Link DI-8100 16.07.26A1. Affected by this vulnerability is the function url_rule_asp of the file /url_rule.asp of the component POST Parameter Handler. Such manipulation leads to buffer overf…
- CVE-2026-7853CRITICALCVSS 9.8EG 9.82026-05-05
A weakness has been identified in D-Link DI-8100 16.07.26A1. Affected is the function sprintf of the file /auto_reboot.asp of the component HTTP Handler. This manipulation of the argument enable/time causes buffer overflow. It is possible …
- CVE-2026-7747CRITICALCVSS 9.8EG 9.82026-05-04
A security flaw has been discovered in Totolink N300RH 3.2.4-B20220812. Affected by this vulnerability is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. Performing a manipulation of the argument…
- CVE-2026-7719CRITICALCVSS 9.8EG 9.82026-05-04
A security flaw has been discovered in Totolink WA300 5.2cu.7112_B20190227. The affected element is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument http_host r…
- CVE-2026-33446CRITICALCVSS 9.8EG 9.82026-04-30
CVE-2026-33446 is a buffer overflow in the authentication sub-system of the Secure Access client prior to 14.50. Attackers with control of a modified server can send a special packet that can overwrite a small portion of memory conceiva…
- CVE-2026-27820CRITICALCVSS 9.8EG 9.82026-04-16
zlib is a Ruby interface for the zlib compression/decompression library. Versions 3.0.0 and below, 3.1.0, 3.1.1, 3.2.0 and 3.2.1 contain a buffer overflow vulnerability in the Zlib::GzipReader. The zstream_buffer_ungets function prepends c…
- CVE-2025-44560CRITICALCVSS 9.8EG 9.82026-04-10
owntone-server 2ca10d9 is vulnerable to Buffer Overflow due to lack of recursive checking.
- CVE-2025-52221CRITICALCVSS 9.8EG 9.82026-04-08
Tenda AC6 15.03.05.16_multi is vulnerable to Buffer Overflow in the formSetCfm function via the funcname, funcpara1, and funcpara2 parameters.
- CVE-2025-52908CRITICALCVSS 9.8EG 9.82026-04-07
An issue was discovered in the Wi-Fi driver in Samsung Mobile Processor and Wearable Processor Exynos 980, 850, 1280, 1330, 1380, 1480, 1580, W920, W930, and W1000. Incorrect Handling of the NL80211 vendor command leads to a buffer overflo…
- CVE-2026-24660CRITICALCVSS 9.8EG 9.82026-04-07
A heap-based buffer overflow vulnerability exists in the x3f_load_huffman functionality of LibRaw Commit d20315b. A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger th…
- CVE-2026-20911CRITICALCVSS 9.8EG 9.82026-04-07
A heap-based buffer overflow vulnerability exists in the HuffTable::initval functionality of LibRaw Commit 0b56545 and Commit d20315b. A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a malicio…
- CVE-2026-20889CRITICALCVSS 9.8EG 9.82026-04-07
A heap-based buffer overflow vulnerability exists in the x3f_thumb_loader functionality of LibRaw Commit d20315b. A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger th…
- CVE-2025-52909CRITICALCVSS 9.8EG 9.82026-04-07
An issue was discovered in the Wi-Fi driver in Samsung Mobile Processor and Wearable Processor Exynos 980, 850, 1280, 1330, 1380, 1480, 1580, W920, W930, and W1000. Incorrect Handling of the NL80211 vendor command leads to a buffer overflo…
- CVE-2026-5734CRITICALCVSS 9.8EG 9.82026-04-07
Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have be…
- CVE-2018-25237CRITICALCVSS 9.8EG 9.82026-04-03
Hirschmann HiSecOS devices versions prior to 05.3.03 contain a buffer overflow vulnerability in the HTTPS login interface when RADIUS authentication is enabled that allows remote attackers to crash the device or execute arbitrary code by s…
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