EUVD-2026-89021
GHSA-gj3p-4hcp-q7w6
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Local file-open trigger (AV:L, UI:R) with no auth (PR:N); reliable decompression size mismatch (AC:L) yields full code execution at user privilege (C/I/A:H, S:U).
Primary rating from Vendor (TV).
CVSS VectorVendor: TV
Lifecycle Timeline
5DescriptionCVE.org
TeamViewer Full Client and Host for Linux and macOS prior version 15.82 contain a heap-based buffer overflow vulnerability in the processing of .tvs session recording files. A size mismatch during decompression of recorded session data can result in out-of-bounds heap writes. By convincing a user to open a specially crafted session recording through the "Play or convert recorded session…" feature, an attacker may achieve arbitrary code execution with the privileges of the current user
Articles & Coverage 1
AnalysisAI
Heap-based buffer overflow in TeamViewer Full Client and Host for Linux and macOS before version 15.82 allows arbitrary code execution at the victim user's privilege level when a crafted .tvs session recording is opened through the 'Play or convert recorded session…' feature. Exploitation is gated by heavy prerequisites: the attacker must land the malicious file on the target host and socially engineer the user into opening it (CVSS 3.1 7.8, AV:L/AC:L/PR:N/UI:R), and the resulting code runs only as the current user with no privilege escalation and no network-reachable path. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to be running TeamViewer Full Client or Host for Linux or macOS prior to version 15.82, and to actively open an attacker-supplied, specially crafted .tvs session-recording file through the 'Play or convert recorded session…' feature; the malicious file relies on a size mismatch during decompression of the recorded session data. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a client-side memory-corruption bug with a genuinely local, user-interaction-gated trigger, so its real-world risk is materially lower than its 7.8 CVSS suggests. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade TeamViewer Full Client and Host on Linux and macOS to version 15.82 or later - this is the fixed release referenced by the advisory (https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1010/). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, confirm which macOS and Linux endpoints run TeamViewer Full Client or Host at versions below 15.82, and instruct those users to stop opening .tvs session recordings received from outside the organization or from unverified internal senders; where the 'Play or convert recorded session' workflow is not operationally required, disable or restrict it and block inbound .tvs attachments at the mail and collaboration gateways. …
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External POC / Exploit Code
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