CVE-2026-76003
Remote stack buffer overflow in UTT HiPER 1200GW web form enabling RCE or DoS.
Is CVE-2026-76003 being exploited?
Not confirmed. CVE-2026-76003 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 0.46% probability of exploitation in the next 30 days.
How severe is CVE-2026-76003?
CVE-2026-76003 is rated High with a CVSS score of 8.6. 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-2026-76003?
Not known from our data. No patch reference has been recorded for CVE-2026-76003, 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-2026-76003 affect?
CVE-2026-76003 affects UTT HiPER 1200GW (<= 2.5.3-170306). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-76003?
Isolate devices, block web admin access, apply vendor firmware when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote stack-based buffer overflow via 'timestart' allows remote code execution or crash (DoS) against device web interface.
Immediate action required
- affected2.5.3-170306
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.