CVE-2026-69559: Origin validation error in Microsoft Teams for Android allows an authorized attacker to disclose information o

Q: How do I fix CVE-2026-69559?

teams: upgrade to 1.0.0.2026142702. Exact commands for each OS are on this page.

Q: Is CVE-2026-69559 being exploited?

CVE-2026-69559 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-2026-69559 affect?

CVE-2026-69559 affects teams. Severity is medium (CVSS 5.8). Origin validation error in Microsoft Teams for Android allows an authorized attacker to disclose information over a network.

Q: How urgent is CVE-2026-69559?

Priority 32/100. On your watchlist

Routine

MEDIUM 5.8WATCHLISTUPGRADE

CVE-2026-69559 is a medium-severity flaw (CVSS 5.8) affecting teams. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Origin validation error in Microsoft Teams for Android allows an authorized attacker to disclose information over a network.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	5.8 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-346
Published	2026-09-08
Last modified	2026-09-29

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-09-29 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-08 18:19 UTCPublished CVE record published
2026-09-29 14:21 UTCUpdated Record last modified

microsoft teams UPGRADE

Affected: < 1.0.0.2026142702

Fixed in: 1.0.0.2026142702

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.0.0.2026142702 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade teams

Note

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

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-2026-69559?

teams: upgrade to 1.0.0.2026142702. Exact commands for each OS are on this page.

Is CVE-2026-69559 being exploited?

CVE-2026-69559 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-2026-69559 affect?

CVE-2026-69559 affects teams. Severity is medium (CVSS 5.8). Origin validation error in Microsoft Teams for Android allows an authorized attacker to disclose information over a network.

How urgent is CVE-2026-69559?

Priority 32/100. On your watchlist

Software pages

Android vulnerabilities · Microsoft Teams vulnerabilities

Related CVEs

CVE-2026-32185 MEDIUM 5.5 UPGRADE Files or directories accessible to external parties in Microsoft Teams allows an unauthorized attacker to perf
CVE-2026-33823 CRITICAL 9.6 MITIGATE Improper authorization in Microsoft Teams allows an authorized attacker to disclose information over a network
CVE-2026-65667 CRITICAL 10.0 MITIGATE Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-62896 CRITICAL 9.6 MITIGATE Improper authentication in Microsoft Teams allows an authorized attacker to elevate privileges over a network.
CVE-2026-65768 HIGH 8.8 UPGRADE Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Teams for Android

References

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