TeamViewer Says PHP2Shell Requires No Customer Action
Tech GuruQuick Answer
TeamViewer TV-2026-1013 says CVE-2026-109618 and CVE-2026-109619 are not vulnerabilities assigned to TeamViewer products and no specific customer action is required. Organizations should document the applicability decision, keep TeamViewer software current, maintain normal access controls, and retain evidence.
Confirm Scope And Apply The Supported Remediation
What to do now: Confirm TeamViewer product and service use, versions, managed endpoints, administrative access paths, owners, and existing patch and access-control records. Use TeamViewer's stated boundary: do not classify TeamViewer products as affected solely because upstream PHP is involved or reuse the upstream CVSS rating as a TeamViewer product score. Do not invent a customer patch. Maintain supported TeamViewer releases, strong access controls, MFA and ordinary monitoring while following any later authority revision. Document the authority review, confirm normal update and access-control posture, monitor the bulletin for revisions, and retain assessment and configuration evidence.
Last verified: 2026-10-30 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | TeamViewer products and relevant TeamViewer-operated environments |
|---|---|
| Advisory | TV-2026-1013 |
| CVEs | CVE-2026-109618, CVE-2026-109619 |
| Authoritative release date | 2026-10-30 15:00:20 UTC |
| Authority revision date | 2026-10-30 15:00:20 UTC |
| Affected versions | TeamViewer says the upstream PHP issues are not vulnerabilities assigned to TeamViewer products and it has not identified customer products as affected. |
| Fixed version | TeamViewer remediated and contained relevant internal environments; no specific customer action is required beyond normal supported updates and security practices |
| CVSS base score | Not provided by the authority |
| CVSS severity | Not provided by the authority |
| Exploitation status | TeamViewer does not state that the vulnerabilities were maliciously exploited against TeamViewer products.; no exploitation claim is inferred. |
What Changed
TeamViewer assessed the upstream PHP2Shell vulnerabilities, remediated relevant internal environments, and says it identified no customer product vulnerability or specific customer action.
What To Validate Now
- Inventory. Confirm TeamViewer product and service use, versions, managed endpoints, administrative access paths, owners, and existing patch and access-control records.
- Establish applicability. Use TeamViewer's stated boundary: do not classify TeamViewer products as affected solely because upstream PHP is involved or reuse the upstream CVSS rating as a TeamViewer product score.
- Remediate. Do not invent a customer patch. Maintain supported TeamViewer releases, strong access controls, MFA and ordinary monitoring while following any later authority revision.
- Validate. Document the authority review, confirm normal update and access-control posture, monitor the bulletin for revisions, and retain assessment and configuration evidence.
- Retain evidence. Preserve asset and owner identifiers, the applicability decision, before-and-after versions, change approval, installation output, validation results, and any exception or rollback record.
Operational Cautions
No specific customer action is required. Avoid disruptive emergency changes unsupported by the bulletin, while continuing normal endpoint and remote-access hygiene.
Evidence To Retain
- Exact product, release stream, package or application version, enabled feature, environment, and accountable owner.
- UTC timestamps, authority revision, approved change record, installer or package-manager output, and resulting version.
- Relevant logs and monitoring evidence, test results, exceptions, compensating controls, and rollback decisions.
Related TechGeeks Resources
Authoritative References
Correction policy: If the authority changes affected versions, fixed versions, severity, exploitation information, mitigations, or required action, TechGeeks will update this notice and its verification date.
