CVE-2026-12935
Stack-based buffer overflow in TL-WR940N v6 RTSP conntrack allowing DoS or RCE.
Is CVE-2026-12935 being exploited?
Not confirmed. CVE-2026-12935 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 0.91% probability of exploitation in the next 30 days.
How severe is CVE-2026-12935?
CVE-2026-12935 is rated High. 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-2026-12935?
Not known from our data. No patch reference has been recorded for CVE-2026-12935, 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-2026-12935 affect?
CVE-2026-12935 affects TP-Link TL-WR940N v6 routers, Router firmware RTSP connection-tracking kernel module. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-12935?
Block/inspect RTSP traffic, isolate affected devices, restrict LAN access; apply vendor firmware when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated LAN client can trigger a stack overflow via a malicious RTSP server, causing DoS or remote code execution and full device compromise.
Immediate action required
- affected< (US)_V6_260528
- affected< (JP)_V6_260527
- affected< (EU)_V6_260528
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.