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 4 of 95
- CVE-2026-34875CRITICALCVSS 9.8EG 9.82026-04-01
An issue was discovered in Mbed TLS through 3.6.5 and TF-PSA-Crypto 1.0.0. A buffer overflow can occur in public key export for FFDH keys.
- CVE-2026-31027CRITICALCVSS 9.8EG 9.82026-04-01
TOTOlink A3600R v5.9c.4959 contains a buffer overflow vulnerability in the setAppEasyWizardConfig interface of /lib/cste_modules/app.so. The vulnerability occurs because the rootSsid parameter is not properly validated for length, allowing…
- CVE-2026-28858CRITICALCVSS 9.8EG 9.82026-03-25
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.4 and iPadOS 26.4. A remote user may be able to cause unexpected system termination or corrupt kernel memory.
- CVE-2026-4729CRITICALCVSS 9.8EG 9.82026-03-24
Memory safety bugs present in Firefox 148 and Thunderbird 148. 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…
- CVE-2026-4721CRITICALCVSS 9.8EG 9.82026-03-24
Memory safety bugs present in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could…
- CVE-2026-4720CRITICALCVSS 9.8EG 9.82026-03-24
Memory safety bugs present in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited…
- CVE-2026-27459CRITICALCVSS 9.8EG 9.82026-03-18
pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 22.0.0 and prior to version 26.0.0, if a user provided callback to `set_cookie_generate_callback` returned a cookie value greater than 256 bytes, pyOpenSSL would…
- CVE-2026-32746CRITICALCVSS 9.8EG 9.82026-03-13
telnetd in GNU inetutils through 2.7 allows an out-of-bounds write in the LINEMODE SLC (Set Local Characters) suboption handler because add_slc does not check whether the buffer is full.
- CVE-2026-0110CRITICALCVSS 9.8EG 9.82026-03-10
In MM_DATA_IND of cn_NrSmMsgHdlrFromMM.cpp, there is a possible EoP due to memory corruption. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
- CVE-2025-46108CRITICALCVSS 9.8EG 9.82026-03-04
D-link Dir-513 A1FW110 is vulnerable to Buffer Overflow in the function formTcpipSetup.
- CVE-2026-24103CRITICALCVSS 9.8EG 9.82026-03-03
A buffer overflow vulnerability was discovered in goform/formSetMacFilterCfg in Tenda AC15V1.0 V15.03.05.18_multi.
- CVE-2026-24112CRITICALCVSS 9.8EG 9.82026-03-02
An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by specifying the value of `userInfo`. When `userInfo` is passed into the `addWewifiWhiteUser` function and processed by `sscanf` without size…
- CVE-2026-24110CRITICALCVSS 9.8EG 9.82026-03-02
An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may send overly long `addDhcpRules` data. When these rules enter the `addDhcpRule` function and are processed by `ret = sscanf(pRule, " %d\t%[^\t]\t%[^\n\r\t]", &dhcpsIndex…
- CVE-2026-24115CRITICALCVSS 9.8EG 9.82026-03-02
An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Failure to validate the sizes of `gstup` and `gstdwn` before concatenating them into `gstruleQos` may lead to buffer overflow.
- CVE-2026-24114CRITICALCVSS 9.8EG 9.82026-03-02
An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Failure to validate `pPortMapIndex` may lead to buffer overflows when using `strcpy`.
- CVE-2026-24113CRITICALCVSS 9.8EG 9.82026-03-02
An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by controlling the value of `nptr`. When this value is passed into the `getMibPrefix` function and concatenated using `sprintf` without proper…
- CVE-2026-24111CRITICALCVSS 9.8EG 9.82026-03-02
An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by specifying the value of `userInfo`. When `userInfo` is passed into the `addAuthUser` function and processed by `sscanf` without size valida…
- CVE-2026-24109CRITICALCVSS 9.8EG 9.82026-03-02
An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by controlling the value of `picName`. When this value is used in `sprintf` without validating variable sizes, it could lead to a buffer overf…
- CVE-2026-24108CRITICALCVSS 9.8EG 9.82026-03-02
An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by controlling the value of `nptr`. When this value is passed into the `getMibPrefix` function and concatenated using `sprintf` without proper…
- CVE-2026-3271CRITICALCVSS 9.8EG 9.82026-02-27
A vulnerability was found in Tenda F453 1.0.0.3. This impacts the function fromP2pListFilter of the file /goform/P2pListFilterof of the component httpd. The manipulation of the argument page results in buffer overflow. The attack may be la…
- CVE-2025-70314CRITICALCVSS 9.8EG 9.82026-02-12
webfsd 1.21 is vulnerable to a Buffer Overflow via a crafted request. This is due to the filename variable
- CVE-2026-25994CRITICALCVSS 9.8EG 9.82026-02-11
PJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, a buffer overflow vulnerability exists in PJNATH ICE Session when processing credentials with excessively long usernames.
- CVE-2020-37075CRITICALCVSS 9.8EG 9.82026-02-03
LanSend 3.2 contains a buffer overflow vulnerability in the Add Computers Wizard file import functionality that allows remote attackers to execute arbitrary code. Attackers can craft a malicious payload file to trigger a structured excepti…
- CVE-2020-37074CRITICALCVSS 9.8EG 9.82026-02-03
Remote Desktop Audit 2.3.0.157 contains a buffer overflow vulnerability that allows attackers to execute arbitrary code during the Add Computers Wizard file import process. Attackers can craft a malicious payload file to trigger a structur…
- CVE-2020-37070CRITICALCVSS 9.8EG 9.82026-02-03
CloudMe 1.11.2 contains a buffer overflow vulnerability that allows remote attackers to execute arbitrary code through crafted network packets. Attackers can exploit the vulnerability by sending a specially crafted payload to the CloudMe s…
- CVE-2020-37069CRITICALCVSS 9.8EG 9.82026-02-03
Konica Minolta FTP Utility 1.0 contains a buffer overflow vulnerability in the NLST command that allows attackers to overwrite system registers. Attackers can send an oversized buffer of 1500 'A' characters to crash the FTP server and pote…
- CVE-2020-37068CRITICALCVSS 9.8EG 9.82026-02-03
Konica Minolta FTP Utility 1.0 contains a buffer overflow vulnerability in the LIST command that allows attackers to overwrite system registers. Attackers can send an oversized buffer of 1500 'A' characters to crash the FTP server and pote…
- CVE-2020-37065CRITICALCVSS 9.8EG 9.82026-02-03
StreamRipper32 version 2.6 contains a buffer overflow vulnerability in the Station/Song Section that allows attackers to overwrite memory by manipulating the SongPattern input. Attackers can craft a malicious payload exceeding 256 bytes to…
- CVE-2025-67188CRITICALCVSS 9.8EG 9.82026-02-03
A buffer overflow vulnerability exists in TOTOLINK A950RG V4.1.2cu.5204_B20210112. The issue resides in the setRadvdCfg interface of the /lib/cste_modules/ipv6.so module. The function fails to properly validate the length of the user-contr…
- CVE-2025-67186CRITICALCVSS 9.8EG 9.82026-02-03
TOTOLINK A950RG V4.1.2cu.5204_B20210112 contains a buffer overflow vulnerability in the setUrlFilterRules interface of /lib/cste_modules/firewall.so. The vulnerability occurs because the `url` parameter is not properly validated for length…
- CVE-2020-37050CRITICALCVSS 9.8EG 9.82026-01-30
Quick Player 1.3 contains a buffer overflow vulnerability that allows attackers to execute arbitrary code by crafting a malicious .m3l file with carefully constructed payload. Attackers can trigger the vulnerability by loading a specially …
- CVE-2020-37043CRITICALCVSS 9.8EG 9.82026-01-30
10-Strike Bandwidth Monitor 3.9 contains a buffer overflow vulnerability that allows attackers to bypass SafeSEH, ASLR, and DEP protections through carefully crafted input. Attackers can exploit the vulnerability by sending a malicious pay…
- CVE-2019-25232CRITICALCVSS 9.8EG 9.82026-01-30
NetPCLinker 1.0.0.0 contains a buffer overflow vulnerability in the Clients Control Panel DNS/IP field that allows attackers to execute arbitrary shellcode. Attackers can craft a malicious payload in the DNS/IP input to overwrite SEH handl…
- CVE-2020-37010CRITICALCVSS 9.8EG 9.82026-01-29
BearShare Lite 5.2.5 contains a buffer overflow vulnerability in the Advanced Search keywords input that allows attackers to execute arbitrary code. Attackers can craft a specially designed payload to overwrite the EIP register and execute…
- CVE-2026-1188CRITICALCVSS 9.8EG 9.82026-01-29
In the Eclipse OMR port library component since release 0.2.0, an API function to return the textual names of all supported processor features was not accounting for the separator inserted between processor features. If the output buffer s…
- CVE-2020-36940CRITICALCVSS 9.8EG 9.82026-01-27
Easy CD & DVD Cover Creator 4.13 contains a buffer overflow vulnerability in the serial number input field that allows attackers to crash the application. Attackers can generate a 6000-byte payload and paste it into the serial number field…
- CVE-2026-24793CRITICALCVSS 9.8EG 9.82026-01-27
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in azerothcore azerothcore-wotlk (deps/zlib modules). This vulnerability is associated with program files inflate.C. This issue affe…
- CVE-2026-1420CRITICALCVSS 9.8EG 9.82026-01-26
A flaw has been found in Tenda AC23 16.03.07.52. This impacts an unknown function of the file /goform/WifiExtraSet. This manipulation of the argument wpapsk_crypto causes buffer overflow. Remote exploitation of the attack is possible. The …
- CVE-2021-47854CRITICALCVSS 9.8EG 9.82026-01-21
DD-WRT version 45723 contains a buffer overflow vulnerability in the UPNP network discovery service that allows remote attackers to potentially execute arbitrary code. Attackers can send crafted M-SEARCH packets with oversized UUID payload…
- CVE-2026-1162CRITICALCVSS 9.8EG 9.82026-01-19
A flaw has been found in UTT HiPER 810 1.7.4-141218. The impacted element is the function strcpy of the file /goform/setSysAdm. This manipulation of the argument passwd1 causes buffer overflow. Remote exploitation of the attack is possible…
- CVE-2021-47798CRITICALCVSS 9.8EG 9.82026-01-16
NoteBurner 2.35 contains a buffer overflow vulnerability in the license code input field that allows attackers to crash the application. Attackers can generate a 6000-byte payload and paste it into the 'Name' and 'Code' fields to trigger a…
- CVE-2022-50922CRITICALCVSS 9.8EG 9.82026-01-13
Audio Conversion Wizard v2.01 contains a buffer overflow vulnerability that allows attackers to execute arbitrary code by overwriting memory with a specially crafted registration code. Attackers can generate a payload that overwrites the a…
- CVE-2025-29329CRITICALCVSS 9.8EG 9.82026-01-12
Buffer Overflow in the ippprint (Internet Printing Protocol) service in Sagemcom F@st 3686 MAGYAR_4.121.0 allows remote attacker to execute arbitrary code by sending a crafted HTTP request.
- CVE-2025-69258CRITICALCVSS 9.8EG 9.82026-01-08
A LoadLibraryEX vulnerability in Trend Micro Apex Central could allow an unauthenticated remote attacker to load an attacker-controlled DLL into a key executable, leading to execution of attacker-supplied code under the context of SYSTEM o…
- CVE-2026-0640CRITICALCVSS 9.8EG 9.82026-01-06
A weakness has been identified in Tenda AC23 16.03.07.52. This affects the function sscanf of the file /goform/PowerSaveSet. Executing a manipulation of the argument Time can lead to buffer overflow. The attack can be launched remotely. Th…
- CVE-2025-15092CRITICALCVSS 9.8EG 9.82025-12-26
A vulnerability was identified in UTT 进取 512W up to 1.7.7-171114. Impacted is the function strcpy of the file /goform/ConfigExceptMSN. Such manipulation of the argument remark leads to buffer overflow. It is possible to launch the atta…
- CVE-2025-15091CRITICALCVSS 9.8EG 9.82025-12-26
A vulnerability was determined in UTT 进取 512W up to 1.7.7-171114. This issue affects the function strcpy of the file /goform/formPictureUrl. This manipulation of the argument importpictureurl causes buffer overflow. It is possible to i…
- CVE-2025-15090CRITICALCVSS 9.8EG 9.82025-12-25
A vulnerability was found in UTT 进取 512W up to 1.7.7-171114. This vulnerability affects the function strcpy of the file /goform/formConfigNoticeConfig. The manipulation of the argument timestart results in buffer overflow. The attack m…
- CVE-2025-15089CRITICALCVSS 9.8EG 9.82025-12-25
A vulnerability has been found in UTT 进取 512W up to 1.7.7-171114. This affects the function strcpy of the file /goform/APSecurity. The manipulation of the argument wepkey1 leads to buffer overflow. The attack is possible to be carried …
- CVE-2025-68114CRITICALCVSS 9.8EG 9.82025-12-17
Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, an unchecked vsnprintf return in SStream_concat lets a malicious cs_opt_mem.vsnprintf drive SStream’s index negative or past the end, leading to a stack buffer unde…
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