How severe is CVE-2026-23569?

CVE-2026-23569 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-23569 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23569?

CVE-2026-23569 affects Teamviewer Digital Employee Experience. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23569?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-23569 have an EU (EUVD) identifier?

Yes. CVE-2026-23569 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4993.

When was CVE-2026-23569 published?

CVE-2026-23569 was published on 2026-01-29 and last updated on 2026-06-17.

CVE-2026-23569

CVE-2026-23569 is a medium-severity vulnerability in Teamviewer Digital Employee Experience with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-4993
Weakness: CWE-125
Affected product: Teamviewer Digital Employee Experience
Published: 2026-01-29
Last modified: 2026-06-17

Description

An out-of-bounds read vulnerability in the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows a remote attacker to leak stack memory and cause a denial of service via a crafted request. The leaked stack memory could be used to bypass ASLR remotely and facilitate exploitation of other vulnerabilities on the affected system.

Frequently asked questions

What is CVE-2026-23569?: An out-of-bounds read vulnerability in the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows a remote attacker to leak stack memory and cause a denial of service via a crafted request. The leaked stack memory could be used to bypass ASLR remotely and facilitate exploitation of other vulnerabilities on the affected system.
How severe is CVE-2026-23569?: CVE-2026-23569 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-23569 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23569?: CVE-2026-23569 affects Teamviewer Digital Employee Experience. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23569?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-23569 have an EU (EUVD) identifier?: Yes. CVE-2026-23569 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4993.
When was CVE-2026-23569 published?: CVE-2026-23569 was published on 2026-01-29 and last updated on 2026-06-17.

References

https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001/

Affected products (1)

cpe:2.3:a:teamviewer:digital_employee_experience:*:*:*:*:*:*:*:*

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