CVE-2026-59263: A manipulated document opened in Apache OpenOffice 4.1.16 or earlier may allow substituted content to be displ

Q: How do I fix CVE-2026-59263?

openoffice: upgrade to 4.1.17. Exact commands for each OS are on this page.

Q: Is CVE-2026-59263 being exploited?

CVE-2026-59263 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-59263 affect?

CVE-2026-59263 affects openoffice. Severity is medium (CVSS 5.5). A manipulated document opened in Apache OpenOffice 4.1.16 or earlier may allow substituted content to be displayed manipulating the user. Such documents are corrupt and should not be opened. Users are recommended to upgrade to version 4.1.1

Q: How urgent is CVE-2026-59263?

Priority 24/100. On your watchlist

Routine

MEDIUM 5.5WATCHLISTUPGRADE

CVE-2026-59263 is a medium-severity flaw (CVSS 5.5) affecting openoffice. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A manipulated document opened in Apache OpenOffice 4.1.16 or earlier may allow substituted content to be displayed manipulating the user. Such documents are corrupt and should not be opened. Users are recommended to upgrade to version 4.1.17, which fixes this issue.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	n/a
CISA exploited list	No
Weakness	CWE-349
Published	2026-11-04
Last modified	2026-11-04

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-11-04 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-11-04 11:17 UTCPublished CVE record published
2026-11-04 16:17 UTCUpdated Record last modified

apache openoffice UPGRADE

Affected: < 4.1.17

Fixed in: 4.1.17

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy openoffice || rpm -q openoffice || openoffice --version

2. UPGRADE to 4.1.17 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openoffice

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openoffice

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Advisories and coverage

Research and news

Vulners Bulletins: CVE-2026-59263 2026-11-04
oss-security list: CVE-2026-59263: Apache OpenOffice: Carefully crafted documents could display different data when opened with different programs, instead of 2026-11-03

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-59263?

openoffice: upgrade to 4.1.17. Exact commands for each OS are on this page.

Is CVE-2026-59263 being exploited?

CVE-2026-59263 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-59263 affect?

CVE-2026-59263 affects openoffice. Severity is medium (CVSS 5.5). A manipulated document opened in Apache OpenOffice 4.1.16 or earlier may allow substituted content to be displayed manipulating the user. Such documents are corrupt and should not be opened. Users are recommended to upgrade to version 4.1.1

How urgent is CVE-2026-59263?

Priority 24/100. On your watchlist

Related CVEs

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CVE-2026-90634 HIGH 7.3 UPGRADE An uncontrolled memory access in the PDF import code of Apache OpenOffice versions through 4.1.16 allows a cra
CVE-2026-59267 HIGH 7.8 UPGRADE A crafted DXF document causes a heap buffer overflow in Draw in Apache OpenOffice 4.1.16 and earlier
CVE-2025-64405 HIGH 7.5 UPGRADE Apache OpenOffice documents can contain links

References

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