RHSA-2026:48703HighCVSS 7.8

Red Hat Security Advisory: vim security update

Published
July 31, 2026
Last Modified
August 13, 2026

🔗 CVE IDs covered (4)

CVE-2026-55693 →CVE-2026-57455 →CVE-2026-57456 →CVE-2026-59858 →

📋 Description

CVE-2026-55693 — vim: Vim: Out-of-bounds Write in Spell File Word Count CVE-2026-57455 — vim: Vim: Denial of Service via stack out-of-bounds write in spell_soundfold_sofo() CVE-2026-57456 — vim: Vim: Arbitrary code execution via malicious docstrings in Python omni-completion CVE-2026-59858 — vim: Vim: Arbitrary command execution via crafted tags file in C omni-completion

🎯 Affected products68

  • Red Hat Enterprise Linux AppStream (v. 8)
  • Red Hat Enterprise Linux BaseOS (v. 8)
  • vim-2:8.0.1763-31.el8_10.src as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • vim-X11-2:8.0.1763-31.el8_10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-X11-2:8.0.1763-31.el8_10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-X11-2:8.0.1763-31.el8_10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-X11-2:8.0.1763-31.el8_10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-X11-debuginfo-2:8.0.1763-31.el8_10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-X11-debuginfo-2:8.0.1763-31.el8_10.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • vim-X11-debuginfo-2:8.0.1763-31.el8_10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-X11-debuginfo-2:8.0.1763-31.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • vim-X11-debuginfo-2:8.0.1763-31.el8_10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-X11-debuginfo-2:8.0.1763-31.el8_10.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • vim-X11-debuginfo-2:8.0.1763-31.el8_10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-X11-debuginfo-2:8.0.1763-31.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • vim-common-2:8.0.1763-31.el8_10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-common-2:8.0.1763-31.el8_10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-common-2:8.0.1763-31.el8_10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-common-2:8.0.1763-31.el8_10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-common-debuginfo-2:8.0.1763-31.el8_10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-common-debuginfo-2:8.0.1763-31.el8_10.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • vim-common-debuginfo-2:8.0.1763-31.el8_10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-common-debuginfo-2:8.0.1763-31.el8_10.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • vim-common-debuginfo-2:8.0.1763-31.el8_10.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-common-debuginfo-2:8.0.1763-31.el8_10.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • vim-common-debuginfo-2:8.0.1763-31.el8_10.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-common-debuginfo-2:8.0.1763-31.el8_10.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • vim-debuginfo-2:8.0.1763-31.el8_10.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • vim-debuginfo-2:8.0.1763-31.el8_10.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 8)
  • vim-debuginfo-2:8.0.1763-31.el8_10.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • +38 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: To mitigate this issue disable spell checking or avoid using SOFO-based spell files. This can be achieved globally by adding set nospell to your ~/.vimrc configuration file. Ensure your systems utilize standard UTF-8 encoding. This flaw is strictly confined to legacy 8-bit encodings and cannot be triggered under default Red Hat configurations. Workaround: To mitigate this vulnerability, users should avoid opening untrusted Python files or using Python omni-completion on such files. If Python omni-completion is not required, it can be disabled by adding `autocmd FileType python setlocal omnifunc=` to your `.vimrc` file. This will prevent the vulnerable code from being executed. Disabling Python omni-completion will remove the ability to use `Ctrl-X Ctrl-O` for Python code completion. A restart of Vim is required for the changes to take effect. Workaround: Users are advised to avoid opening untrusted C source files or project tags files in Vim. Exercising caution and only processing trusted content prevents exploitation.

🔗 References (7)