CVE-2025-15255
Remote stack overflow in Tenda W6-S httpd via Cookie arg; possible remote code execution.
Is CVE-2025-15255 being exploited?
Not confirmed. CVE-2025-15255 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 4.5% probability of exploitation in the next 30 days.
How severe is CVE-2025-15255?
CVE-2025-15255 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-2025-15255?
Not known from our data. No patch reference has been recorded for CVE-2025-15255, 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-2025-15255 affect?
CVE-2025-15255 affects Tenda W6-S router (firmware 1.0.0.4(510)). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-15255?
Patch when available; disable remote HTTP management if feasible.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker can trigger a stack overflow via Cookie arg in /bin/httpd, possibly executing arbitrary code on the router.
Immediate action required
- affected1.0.0.4(510)
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.