CVE-2026-7138
Remote OS command injection in Totolink A8000RU CGI via tz param
Is CVE-2026-7138 being exploited?
Not confirmed. CVE-2026-7138 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 1.8% probability of exploitation in the next 30 days.
How severe is CVE-2026-7138?
CVE-2026-7138 is rated High with a CVSS score of 8.9. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-7138?
Not known from our data. No patch reference has been recorded for CVE-2026-7138, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-7138 affect?
CVE-2026-7138 affects Totolink A8000RU router (firmware 7.1cu.643_b20200521). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-7138?
Apply firmware update when released; limit WAN exposure; monitor logs
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution on the router by injecting OS commands through tz in NTP config; attacker could fully compromise device.
Patch when possible
- affected7.1cu.643_b20200521
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.