CVE-2026-69973: Windows libarchive Tampering Vulnerability
Improper limitation of a pathname to a restricted directory ('path traversal') in Windows Libarchive allows an unauthorized attacker to perform tampering over a network.
Other sources
Windows libarchive Tampering Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9376Patch KB5126651 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9711Patch KB5127648
Event History
Frequently Asked Questions
Which systems are identified as affected?
The listed affected products are Microsoft Windows 10, Windows 11, Windows Server 2019, Windows Server 2022, and Windows Server 2025.
What does an attacker need to exploit this issue?
The vector is network-based and requires no privileges, but user interaction is required. The provided data does not specify the interaction or archive-processing workflow involved.
What is the potential impact if exploitation succeeds?
Successful exploitation could allow tampering with integrity. The supplied severity vector indicates no confidentiality or availability impact.