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CWE-786

Access of Memory Location Before Start of Buffer

The product reads or writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.

9
Assigned CVEs
451st
Commonality Rank
7.3
Avg CVSS
0.0%
In CISA KEV

Volume and Severity of Assigned CVEs Over Time

Volume of CVEs assigned to CWE-786 and their average CVSS base score over time.

Volume of CVEsAvg CVSS Base Score
First CVE
Jan 25, 2022
4 years ago
Most Recent CVE
Mar 4, 2026
142 days ago

Top CVEs Assigned This CWE

Top CVEs that have been assigned this CWE. A single CVE can have multiple CWE assignments, though many have just one.

9 CVEs · Highest risk first

CVEPublishedCVSSRiskKEVExploit
CVE-2023-46724HIGH
Squid is a caching proxy for the Web. Due to an Improper Validation of Specified Index bug, Squid versions 3.3.0.1 through 5.9 and 6.0 prior to 6.4 compiled using `--with-openssl`
Nov 1, 20237.525NONO
CVE-2024-27808HIGH
The issue was addressed with improved memory handling. This issue is fixed in Safari 17.5, iOS 17.5 and iPadOS 17.5, macOS Sonoma 14.5, tvOS 17.5, visionOS 1.2, watchOS 10.5. Proce
Jun 10, 20248.824NONO
CVE-2026-20058MEDIUM
Multiple Cisco products are affected by vulnerabilities in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to cra
Mar 4, 20265.821NONO
CVE-2024-27831HIGH
An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in iOS 16.7.8 and iPadOS 16.7.8, iOS 17.5 and iPadOS 17.5, macOS Monterey 12.7.5, mac
Jun 10, 20247.821NONO
CVE-2024-27828HIGH
The issue was addressed with improved memory handling. This issue is fixed in iOS 17.5 and iPadOS 17.5, tvOS 17.5, visionOS 1.2, watchOS 10.5. An app may be able to execute arbitra
Jun 10, 20247.821NONO
CVE-2024-27840MEDIUM
The issue was addressed with improved memory handling. This issue is fixed in iOS 16.7.8 and iPadOS 16.7.8, iOS 17.5 and iPadOS 17.5, macOS Monterey 12.7.5, macOS Ventura 13.6.7, t
Jun 10, 20246.320NONO
CVE-2022-0351HIGH
Access of Memory Location Before Start of Buffer in GitHub repository vim/vim prior to 8.2.
Jan 25, 20227.820NONO
CVE-2024-5700HIGH
Memory safety bugs present in Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11. Some of these bugs showed evidence of memory corruption and we presume that with enough effor
Jun 11, 20247.019NONO
CVE-2022-0522HIGH
Access of Memory Location Before Start of Buffer in NPM radare2.js prior to 5.6.2.
Feb 8, 20227.118NONO
View all 9 CVEs →

CVE Severity & Scoring

This CWEGlobal (All CVEs)
0.0-0.9
1.0-1.9
2.0-2.9
3.0-3.9
10%
4.0-4.9
11%
19%
5.0-5.9
11%
16%
6.0-6.9
67%
26%
7.0-7.9
11%
11%
8.0-8.9
14%
9.0-10.0
unknown
CVSS Score Range

Exploit Exposure

Exploit activity across CVEs assigned to this CWE, including CVEs that carry other CWE assignments.

CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%

Social Chatter

Social posts that mention CVE IDs assigned to this CWE. This is assigned-CVE activity, not mentions of the CWE label itself.

Media Mentions

Media articles that mention CVE IDs assigned to this CWE. This is assigned-CVE coverage, not mentions of the CWE label itself.

Top Affected Vendors

Top Affected Products