Vulnerability-Lookup

CVE-2021-3872 (GCVE-0-2021-3872)

Vulnerability from cvelistv5 – Published: 2021-10-19 12:30 – Updated: 2025-11-03 20:33

Title

Heap-based Buffer Overflow in vim/vim

Summary

vim is vulnerable to Heap-based Buffer Overflow

Severity

7.8 (High)


                        
                          CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

@huntrdev

References

7 references

URL	Tags
https://huntr.dev/bounties/c958013b-1c09-4939-92c…	x_refsource_CONFIRM
https://github.com/vim/vim/commit/826bfe4bbd75941…	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.debian.org/debian-lts-announce/2022…	mailing-listx_refsource_MLIST
https://security.gentoo.org/glsa/202208-32	vendor-advisoryx_refsource_GENTOO
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

1 product

Vendor	Product	Version	CPE status
vim	vim/vim	Affected: unspecified , < 8.2.3487 (custom)	guessed

Show details on NVD website

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    "nvd": "{\"cve\":{\"id\":\"CVE-2021-3872\",\"sourceIdentifier\":\"security@huntr.dev\",\"published\":\"2021-10-19T13:15:11.820\",\"lastModified\":\"2026-06-17T04:05:55.550\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"vim is vulnerable to Heap-based Buffer Overflow\"},{\"lang\":\"es\",\"value\":\"vim es vulnerable a un Desbordamiento del B\u00fafer en la regi\u00f3n Heap de la 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Party Advisory\"]},{\"url\":\"https://huntr.dev/bounties/c958013b-1c09-4939-92ca-92f50aa169e8\",\"source\":\"security@huntr.dev\",\"tags\":[\"Exploit\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html\",\"source\":\"security@huntr.dev\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7K4JJBIH3OQSZRVTWKCJCDLGMFGQ5DOH/\",\"source\":\"security@huntr.dev\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S42L4Z4DTW4LHLQ4FJ33VEOXRCBE7WN4/\",\"source\":\"security@huntr.dev\"},{\"url\":\"https://security.gentoo.org/glsa/202208-32\",\"source\":\"security@huntr.dev\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/vim/vim/commit/826bfe4bbd7594188e3d74d2539d9707b1c6a14b\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://huntr.dev/bounties/c958013b-1c09-4939-92ca-92f50aa169e8\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2022/03/msg00018.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00023.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7K4JJBIH3OQSZRVTWKCJCDLGMFGQ5DOH/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S42L4Z4DTW4LHLQ4FJ33VEOXRCBE7WN4/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.gentoo.org/glsa/202208-32\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-03T02:08:26+00:00",
      "cve": "CVE-2021-3872",
      "id": "CVE-2021-3872",
      "initial_release_date": "2021-10-07T00:00:00+00:00",
      "product_status:fixed": "66",
      "product_status:known_affected": "12",
      "product_status:known_not_affected": "7",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "vim: heap-based buffer overflow in win_redr_status() in drawscreen.c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-3872.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-02T02:26:00Z",
      "cve": "CVE-2021-3872",
      "id": "CVE-2021-3872",
      "initial_release_date": "2023-02-15T03:48:25Z",
      "product_status:known_affected": "351",
      "product_status:known_not_affected": "23",
      "product_status:recommended": "379",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-3872",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-3872.json",
      "version": "37"
    }
  }
}

RHSA-2022:0366

Vulnerability from csaf_redhat - Published: 2022-02-01 21:06 - Updated: 2026-07-03 02:10

Summary

Red Hat Security Advisory: vim security update

Severity

Moderate

Scope

5 vulnerabilities in this advisory, including CVE-2021-3872.

CVE-2021-3872

An out-of-bounds write flaw was found in vim's drawscreen.c win_redr_status() function. This flaw allows an attacker to trick a user to open a crafted file with specific arguments in vim, triggering an out-of-bounds write. The highest threat from this vulnerability is to confidentiality, integrity, and system availability.

6.6 (Medium)


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

Fixed: 66 products

https://access.redhat.com/errata/RHSA-2022:0366

Open the full advisory

RHSA-2022_0366

Vulnerability from csaf_redhat - Published: 2022-02-01 21:06 - Updated: 2024-11-22 17:44

Summary

Red Hat Security Advisory: vim security update

Severity

Moderate

Scope

5 vulnerabilities in this advisory, including CVE-2021-3872.

CVE-2021-3872

6.6 (Medium)


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

Fixed: 84 products

https://access.redhat.com/errata/RHSA-2022:0366

Open the full advisory

SUSE-SU-2022:0736-1

Vulnerability from csaf_suse - Published: 2022-03-04 13:54 - Updated: 2022-03-04 13:54

Summary

Security update for vim

Severity

Important

Scope

14 vulnerabilities in this advisory, including CVE-2021-3872.

CVE-2021-3872

7.8 (High)


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

Recommended: 145 products

Open the full advisory

SUSE-SU-2022:0736-2

Vulnerability from csaf_suse - Published: 2022-04-19 19:11 - Updated: 2022-04-19 19:11

Summary

Security update for vim

Severity

Important

Scope

14 vulnerabilities in this advisory, including CVE-2021-3872.

CVE-2021-3872

7.8 (High)


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

Recommended: 4 products

Open the full advisory

SUSE-SU-2022:2102-1

Vulnerability from csaf_suse - Published: 2022-06-16 13:18 - Updated: 2022-06-16 13:18

Summary

Security update for vim

Severity

Important

Scope

45 vulnerabilities in this advisory, including CVE-2021-3872.

CVE-2021-3872

7.8 (High)


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

Recommended: 184 products

Open the full advisory

SUSE-SU-2022:4619-1

Vulnerability from csaf_suse - Published: 2022-12-27 04:16 - Updated: 2022-12-27 04:16

Summary

Security update for vim

Severity

Moderate

Scope

104 vulnerabilities in this advisory, including CVE-2021-3872.

CVE-2021-3872

7.8 (High)


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

Recommended: 52 products

Open the full advisory

ubuntu-cve-2021-3872

Vulnerability from osv_ubuntu

Published

2021-10-19 13:15

Modified

2025-09-08 16:46

Summary

Details

vim is vulnerable to Heap-based Buffer Overflow

Severity

7.8 (High)


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

7.8 (High)


                    
                      CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2021-3872	REPORT
	https://github.com/vim/vim/commit/826bfe4bbd75941…	REPORT
	https://huntr.dev/bounties/c958013b-1c09-4939-92c…	REPORT
	https://ubuntu.com/security/notices/USN-5147-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2021-3872	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "vim",
            "binary_version": "2:8.1.2269-1ubuntu5.4"
          },
          {
            "binary_name": "vim-athena",
            "binary_version": "2:8.1.2269-1ubuntu5.4"
          },
          {
            "binary_name": "vim-common",
            "binary_version": "2:8.1.2269-1ubuntu5.4"
          },
          {
            "binary_name": "vim-gtk",
            "binary_version": "2:8.1.2269-1ubuntu5.4"
          },
          {
            "binary_name": "vim-gtk3",
            "binary_version": "2:8.1.2269-1ubuntu5.4"
          },
          {
            "binary_name": "vim-gui-common",
            "binary_version": "2:8.1.2269-1ubuntu5.4"
          },
          {
            "binary_name": "vim-nox",
            "binary_version": "2:8.1.2269-1ubuntu5.4"
          },
          {
            "binary_name": "vim-runtime",
            "binary_version": "2:8.1.2269-1ubuntu5.4"
          },
          {
            "binary_name": "vim-tiny",
            "binary_version": "2:8.1.2269-1ubuntu5.4"
          },
          {
            "binary_name": "xxd",
            "binary_version": "2:8.1.2269-1ubuntu5.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "vim",
        "purl": "pkg:deb/ubuntu/vim@2:8.1.2269-1ubuntu5.4?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:8.1.2269-1ubuntu5.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:8.1.0875-5ubuntu2",
        "2:8.1.0875-5ubuntu3",
        "2:8.1.0875-5ubuntu4",
        "2:8.1.2269-1ubuntu1",
        "2:8.1.2269-1ubuntu4",
        "2:8.1.2269-1ubuntu5",
        "2:8.1.2269-1ubuntu5.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "vim",
            "binary_version": "2:8.2.3565-1ubuntu2"
          },
          {
            "binary_name": "vim-athena",
            "binary_version": "2:8.2.3565-1ubuntu2"
          },
          {
            "binary_name": "vim-common",
            "binary_version": "2:8.2.3565-1ubuntu2"
          },
          {
            "binary_name": "vim-gtk",
            "binary_version": "2:8.2.3565-1ubuntu2"
          },
          {
            "binary_name": "vim-gtk3",
            "binary_version": "2:8.2.3565-1ubuntu2"
          },
          {
            "binary_name": "vim-gui-common",
            "binary_version": "2:8.2.3565-1ubuntu2"
          },
          {
            "binary_name": "vim-nox",
            "binary_version": "2:8.2.3565-1ubuntu2"
          },
          {
            "binary_name": "vim-runtime",
            "binary_version": "2:8.2.3565-1ubuntu2"
          },
          {
            "binary_name": "vim-tiny",
            "binary_version": "2:8.2.3565-1ubuntu2"
          },
          {
            "binary_name": "xxd",
            "binary_version": "2:8.2.3565-1ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "vim",
        "purl": "pkg:deb/ubuntu/vim@2:8.2.3565-1ubuntu2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:8.2.3565-1ubuntu2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:8.2.2434-3ubuntu3",
        "2:8.2.2434-3ubuntu4",
        "2:8.2.3565-1ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "vim is vulnerable to Heap-based Buffer Overflow",
  "id": "UBUNTU-CVE-2021-3872",
  "modified": "2025-09-08T16:46:49Z",
  "published": "2021-10-19T13:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3872"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/vim/vim/commit/826bfe4bbd7594188e3d74d2539d9707b1c6a14b"
    },
    {
      "type": "REPORT",
      "url": "https://huntr.dev/bounties/c958013b-1c09-4939-92ca-92f50aa169e8"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5147-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-3872"
    }
  ],
  "related": [
    "USN-5147-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-3872"
  ]
}

WID-SEC-W-2022-0302

Vulnerability from csaf_certbund - Published: 2022-06-14 22:00 - Updated: 2025-10-06 22:00

Summary

Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit Administratorrechten

Severity

Hoch

Scope

197 vulnerabilities in this advisory, including CVE-2021-3872.

CVE-2021-3872

Known affected: 2 products

Open the full advisory

WID-SEC-W-2022-0345

Vulnerability from csaf_certbund - Published: 2021-10-19 22:00 - Updated: 2025-03-30 22:00

Summary

vim: Schwachstelle ermöglicht nicht spezifizierten Angriff

Severity

Mittel

Scope

1 vulnerability in this advisory, including CVE-2021-3872.

CVE-2021-3872

Known affected: 13 products

Open the full advisory

WID-SEC-W-2022-0432

Vulnerability from csaf_certbund - Published: 2022-06-21 22:00 - Updated: 2025-10-06 22:00

Summary

Xerox FreeFlow Print Server: Mehrere Schwachstellen

Severity

Hoch

Scope

196 vulnerabilities in this advisory, including CVE-2021-3872.

CVE-2021-3872

Known affected: 2 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2021-3872 (GCVE-0-2021-3872)

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature