CVE-2026-11499
Remote stack overflow in Tenda HG7HG9/HG10 via formDOMAINBLK
Is CVE-2026-11499 being exploited?
Not confirmed. CVE-2026-11499 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 6.6% probability of exploitation in the next 30 days.
How severe is CVE-2026-11499?
CVE-2026-11499 is rated Critical with a CVSS score of 9.3. 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-2026-11499?
Not known from our data. No patch reference has been recorded for CVE-2026-11499, 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-2026-11499 affect?
CVE-2026-11499 affects Tenda HG7HG9 routers, Tenda HG10 routers. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-11499?
Patch ASAP; restrict WAN access to affected routers
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution and device takeover via crafted blkDomain input to /boaform/formDOMAINBLK
Immediate action required
- affected300001138_en_xpon
- affected300001138_en_xpon
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.