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Vulnerability record · CVE-2020-20703 · published 20 June 2023

CVE-2020-20703: Vim classic buffer overflow vulnerability

Vim · Vim

Buffer Overflow vulnerability in VIM v.8.1.2135 allows a remote attacker to execute arbitrary code via the operand parameter.

9.8 CVSS 3.1 Critical EPSS 1.5% · top 26.5% CWE-120 · Classic buffer overflow
9.8CVSS 3.1 base score
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Buffer Overflow vulnerability in VIM v.8.1.2135 allows a remote attacker to execute arbitrary code via the operand parameter.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/vim/vim/issues/5041 ExploitIssue TrackingPatch
https://github.com/vim/vim/issues/5041 ExploitIssue TrackingPatch

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-3520Vim heap-based buffer overflow vulnerabilityHeap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.0765.EPSS 1.0%9.8CVE-2022-0318Vim heap-based buffer overflow vulnerabilityHeap-based Buffer Overflow in vim/vim prior to 8.2.EPSS 2.0%9.8CVE-2017-6349Vim integer overflow vulnerabilityAn integer overflow at a u_read_undo memory allocation site would occur for vim before patch 8.0.0377, if it does not properly validate values for tr…EPSS 2.7%9.8CVE-2017-6350Vim integer overflow vulnerabilityAn integer overflow at an unserialize_uep memory allocation site would occur for vim before patch 8.0.0378, if it does not properly validate values f…EPSS 3.2%9.8CVE-2017-5953Vim integer overflow vulnerabilityvim before patch 8.0.0322 does not properly validate values for tree length when handling a spell file, which may result in an integer overflow at a …EPSS 2.8%9.3CVE-2008-6235Vim os command injection vulnerabilityThe Netrw plugin (netrw.vim) in Vim 7.0 and 7.1 allows user-assisted attackers to execute arbitrary commands via shell metacharacters in a filename u…EPSS 3.0%9.3CVE-2008-3074Tar.vim os command injection vulnerabilityThe shellescape function in Vim 7.0 through 7.2, including 7.2a.10, allows user-assisted attackers to execute arbitrary code via the "!" (exclamation…EPSS 3.8%9.3CVE-2008-3075Vim code injection vulnerabilityThe shellescape function in Vim 7.0 through 7.2, including 7.2a.10, allows user-assisted attackers to execute arbitrary code via the "!" (exclamation…EPSS 4.3%

Source: NIST National Vulnerability Database (record CVE-2020-20703), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.