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
4,630 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →
CVEs classified under CWE-120page 1 of 93
- CVE-2025-20333CRITICALCVSS 9.9EG 9.9⚠ KEV2025-09-25
A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker to execute arbitrary code on an…
- CVE-2023-33010CRITICALCVSS 9.8EG 9.8⚠ KEV2023-05-24
A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware versions 4.50 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 …
- CVE-2023-33009CRITICALCVSS 9.8EG 9.8⚠ KEV2023-05-24
A buffer overflow vulnerability in the notification function in Zyxel ATP series firmware versions 4.60 through 5.36 Patch 1, USG FLEX series firmware versions 4.60 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.60 through 5.36 P…
- CVE-2022-37055CRITICALCVSS 9.8EG 9.8⚠ KEV2022-08-28
D-Link Go-RT-AC750 GORTAC750_revA_v101b03 and GO-RT-AC750_revB_FWv200b02 are vulnerable to Buffer Overflow via cgibin, hnap_main,
- CVE-2021-22991CRITICALCVSS 9.8EG 9.8⚠ KEV2021-03-31
On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3, undisclosed requests to a virtual server may be incorrectly handled by the Traffic Management Micr…
- CVE-2020-29557CRITICALCVSS 9.8EG 9.8⚠ KEV2021-01-29
An issue was discovered on D-Link DIR-825 R1 devices through 3.0.1 before 2020-11-20. A buffer overflow in the web interface allows attackers to achieve pre-authentication remote code execution.
- CVE-2020-5135CRITICALCVSS 9.8EG 9.8⚠ KEV2020-10-12
A buffer overflow vulnerability in SonicOS allows a remote attacker to cause Denial of Service (DoS) and potentially execute arbitrary code by sending a malicious request to the firewall. This vulnerability affected SonicOS Gen 6 version 6…
- CVE-2020-15069CRITICALCVSS 9.8EG 9.8⚠ KEV2020-06-29
Sophos XG Firewall 17.x through v17.5 MR12 allows a Buffer Overflow and remote code execution via the HTTP/S Bookmarks feature for clientless access. Hotfix HF062020.1 was published for all firewalls running v17.x.
- CVE-2019-16928CRITICALCVSS 9.8EG 9.8⚠ KEV2019-09-27
Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than CVE-2019-15846. There is a heap-based buffer overflow in string_vformat in string.c involving a long EHLO command.
- CVE-2018-6789CRITICALCVSS 9.8EG 9.8⚠ KEV2018-02-08
An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely.
- CVE-2017-6862CRITICALCVSS 9.8EG 9.8⚠ KEV2017-05-26
NETGEAR WNR2000v3 devices before 1.1.2.14, WNR2000v4 devices before 1.0.0.66, and WNR2000v5 devices before 1.0.0.42 allow authentication bypass and remote code execution via a buffer overflow that uses a parameter in the administration web…
- CVE-2017-7269CRITICALCVSS 9.8EG 9.8⚠ KEV2017-03-27
Buffer overflow in the ScStoragePathFromUrl function in the WebDAV service in Internet Information Services (IIS) 6.0 in Microsoft Windows Server 2003 R2 allows remote attackers to execute arbitrary code via a long header beginning with "I…
- CVE-2016-10174CRITICALCVSS 9.8EG 9.8⚠ KEV2017-01-30
The NETGEAR WNR2000v5 router contains a buffer overflow in the hidden_lang_avi parameter when invoking the URL /apply.cgi?/lang_check.html. This buffer overflow can be exploited by an unauthenticated attacker to achieve remote code executi…
- CVE-2019-11043CRITICALCVSS 8.7EG 9.8⚠ KEV2019-10-28
In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it is possible to cause FPM module to write past allocated buffers into the space reserved for FCGI protocol data, thus op…
- CVE-2020-15999CRITICALCVSS 9.6EG 9.6⚠ KEV2020-11-03
Heap buffer overflow in Freetype in Google Chrome prior to 86.0.4240.111 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
- CVE-2025-31277CRITICALCVSS 8.8EG 9.0⚠ KEV2025-07-30
The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing maliciously crafted web content may lead to memory c…
- CVE-2021-30666CRITICALCVSS 8.8EG 9.0⚠ KEV2021-09-08
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 12.5.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have be…
- CVE-2021-22894CRITICALCVSS 8.8EG 9.0⚠ KEV2021-05-27
A buffer overflow vulnerability exists in Pulse Connect Secure before 9.1R11.4 allows a remote authenticated attacker to execute arbitrary code as the root user via maliciously crafted meeting room.
- CVE-2016-6366CRITICALCVSS 8.8EG 9.0⚠ KEV2016-08-18
Buffer overflow in Cisco Adaptive Security Appliance (ASA) Software through 9.4.2.3 on ASA 5500, ASA 5500-X, ASA Services Module, ASA 1000V, ASAv, Firepower 9300 ASA Security Module, PIX, and FWSM devices allows remote authenticated users …
- CVE-2006-2492CRITICALCVSS 8.8EG 9.0⚠ KEV2006-05-20
Buffer overflow in Microsoft Word in Office 2000 SP3, Office XP SP3, Office 2003 Sp1 and SP2, and Microsoft Works Suites through 2006, allows user-assisted attackers to execute arbitrary code via a malformed object pointer, as originally r…
- CVE-2023-41064CRITICALCVSS 7.8EG 9.0⚠ KEV2023-09-07
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 16.6.1 and iPadOS 16.6.1, macOS Monterey 12.6.9, macOS Ventura 13.5.2, iOS 15.7.9 and iPadOS 15.7.9, macOS Big Sur 11.7.10. Processing a malici…
- CVE-2021-30983CRITICALCVSS 7.8EG 9.0⚠ KEV2021-08-24
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 15.2 and iPadOS 15.2. An application may be able to execute arbitrary code with kernel privileges.
- CVE-2016-0099CRITICALCVSS 7.8EG 9.0⚠ KEV2016-03-09
The Secondary Logon Service in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 does not properly process request han…
- CVE-2013-1331CRITICALCVSS 7.8EG 9.0⚠ KEV2013-06-12
Buffer overflow in Microsoft Office 2003 SP3 and Office 2011 for Mac allows remote attackers to execute arbitrary code via crafted PNG data in an Office document, leading to improper memory allocation, aka "Office Buffer Overflow Vulnerabi…
- CVE-2013-0641CRITICALCVSS 7.8EG 9.0⚠ KEV2013-02-14
Buffer overflow in Adobe Reader and Acrobat 9.x before 9.5.4, 10.x before 10.1.6, and 11.x before 11.0.02 allows remote attackers to execute arbitrary code via a crafted PDF document, as exploited in the wild in February 2013.
- CVE-2010-2572CRITICALCVSS 7.8EG 9.0⚠ KEV2010-11-10
Buffer overflow in Microsoft PowerPoint 2002 SP3 and 2003 SP3 allows remote attackers to execute arbitrary code via a crafted PowerPoint 95 document, aka "PowerPoint Parsing Buffer Overflow Vulnerability."
- CVE-2007-5659CRITICALCVSS 7.8EG 9.0⚠ KEV2008-02-12
Multiple buffer overflows in Adobe Reader and Acrobat 8.1.1 and earlier allow remote attackers to execute arbitrary code via a PDF file with long arguments to unspecified JavaScript methods. NOTE: this issue might be subsumed by CVE-2008-…
- CVE-2004-0210CRITICALCVSS 7.8EG 9.0⚠ KEV2004-08-06
The POSIX component of Microsoft Windows NT and Windows 2000 allows local users to execute arbitrary code via certain parameters, possibly by modifying message length values and causing a buffer overflow.
- CVE-2025-43520CRITICALCVSS 5.5EG 9.0⚠ KEV2025-12-12
A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, wa…
- CVE-2026-93741CRITICALCVSS 10.0EG 10.02026-09-19
A security flaw has been discovered in Totolink A3002MU Hh-B20211125.1046. Affected by this vulnerability is the function formWlWds of the file /boafrm/formWlWds. The manipulation of the argument submit-url results in buffer overflow. It i…
- CVE-2026-93740CRITICALCVSS 10.0EG 10.02026-09-18
A vulnerability was identified in Totolink A3002MU Hh-B20211125.1046. Affected is the function formWlEncrypt of the file /boafrm/formWlEncrypt. The manipulation of the argument submit-url leads to buffer overflow. It is possible to initiat…
- CVE-2026-44756CRITICALCVSS 10.0EG 10.02026-09-08
A memory safety vulnerability exists in the Extended Passport Protocol (EPP) processing library. Under specific conditions, an unauthenticated attacker could exploit a crafted network request containing a malformed EPP header, potentially …
- CVE-2026-82542CRITICALCVSS 10.0EG 10.02026-08-30
A weakness has been identified in Tenda HG10 300001138. Affected by this issue is the function formIPv6Routing of the file /boaform/admin/formIPv6Routing of the component Boa Web Server. This manipulation of the argument destNet causes buf…
- CVE-2026-4689CRITICALCVSS 10.0EG 10.02026-03-24
Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
- CVE-2026-24823CRITICALCVSS 10.0EG 10.02026-01-27
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in FASTSHIFT X-TRACK (Software/X-Track/USER/App/Utils/lv_img_png/PNGdec/src modules). This vulnerability is associated with program f…
- CVE-2026-24810CRITICALCVSS 10.0EG 10.02026-01-27
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in rethinkdb (src/cjson modules). This vulnerability is associated with program files cJSON.Cc. This issue affects rethinkdb: through v2.4.4.
- CVE-2026-24800CRITICALCVSS 10.0EG 10.02026-01-27
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow furnace (extern/zlib modules). This vulnerability is associated with program files inflate.C.
- CVE-2025-9962CRITICALCVSS 10.0EG 10.02025-09-23
A buffer overflow vulnerability in Novakon P series allows attackers to gain root permission without prior authentication.This issue affects P series: P – V2001.A.C518o2 until P-2.0.05 Build 2026.02.06 (commit d0f97…
- CVE-2010-10016CRITICALCVSS 10.0EG 10.02025-08-30
BS.Player version 2.57 (build 1051) contains a vulnerability in its playlist import functionality. When processing .m3u files, the application fails to properly validate the length of playlist entries, resulting in a buffer overflow condit…
- CVE-2012-10035CRITICALCVSS 10.0EG 10.02025-08-05
Turbo FTP Server versions 1.30.823 and 1.30.826 contain a buffer overflow vulnerability in the handling of the PORT command. By sending a specially crafted payload, an unauthenticated remote attacker can overwrite memory structures and exe…
- CVE-2024-36290CRITICALCVSS 10.0EG 10.02025-01-14
A buffer overflow vulnerability exists in the login.cgi Goto_chidx() functionality of Wavlink AC3000 M33A8.V5030.210505. A specially crafted HTTP request can lead to stack-based buffer overflow. An attacker can make an unauthenticated HTTP…
- CVE-2024-25139CRITICALCVSS 10.0EG 10.02024-03-14
In TP-Link Omada er605 1.0.1 through (v2.6) 2.2.3, a cloud-brd binary is susceptible to an integer overflow that leads to a heap-based buffer overflow. After heap shaping, an attacker can achieve code execution in the context of the cloud-…
- CVE-2024-22039CRITICALCVSS 10.0EG 10.02024-03-12
A vulnerability has been identified in Cerberus PRO EN Engineering Tool (All versions < IP8), Cerberus PRO EN Fire Panel FC72x IP6 (All versions < IP6 SR3), Cerberus PRO EN Fire Panel FC72x IP7 (All versions < IP7 SR5), Cerberus PRO EN X20…
- CVE-2024-23621CRITICALCVSS 10.0EG 10.02024-01-26
A buffer overflow exists in IBM Merge Healthcare eFilm Workstation license server. A remote, unauthenticated attacker can exploit this vulnerability to achieve remote code execution.
- CVE-2024-23616CRITICALCVSS 10.0EG 10.02024-01-26
A buffer overflow vulnerability exists in Symantec Server Management Suite version 7.9 and before. A remote, anonymous attacker can exploit this vulnerability to achieve remote code execution as SYSTEM.
- CVE-2024-23615CRITICALCVSS 10.0EG 10.02024-01-26
A buffer overflow vulnerability exists in Symantec Messaging Gateway versions 10.5 and before. A remote, anonymous attacker can exploit this vulnerability to achieve remote code execution as root.
- CVE-2024-23614CRITICALCVSS 10.0EG 10.02024-01-26
A buffer overflow vulnerability exists in Symantec Messaging Gateway versions 9.5 and before. A remote, anonymous attacker can exploit this vulnerability to achieve remote code execution as root.
- CVE-2024-23613CRITICALCVSS 10.0EG 10.02024-01-26
A buffer overflow vulnerability exists in Symantec Deployment Solution version 7.9 when parsing UpdateComputer tokens. A remote, anonymous attacker can exploit this vulnerability to achieve remote code execution as SYSTEM.
- CVE-2023-4260CRITICALCVSS 10.0EG 10.02023-09-27
Potential off-by-one buffer overflow vulnerability in the Zephyr fuse file system.
- CVE-2023-1424CRITICALCVSS 10.0EG 10.02023-05-24
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series CPU modules and MELSEC iQ-R Series CPU modules allows a remote unauthenticated attacker to cause a d…
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