Targets widely deployed protection relays in power systems; auth bypass can enable remote takeover of protection functions and disrupt operations.
CVE-2026-62645
Auth bypass in Reyrolle 7SR5 web UI exposes session IDs; attacker can take control.
Is CVE-2026-62645 being exploited?
Not confirmed. CVE-2026-62645 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 0.35% probability of exploitation in the next 30 days.
How severe is CVE-2026-62645?
CVE-2026-62645 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-2026-62645?
Yes. A fix has been recorded for CVE-2026-62645. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-62645 affect?
CVE-2026-62645 affects Reyrolle 7SR5 protection relays (all versions < V2.70). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-62645?
Upgrade to v2.70 immediately; if delayed, isolate devices and block web management access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attackers can compute session IDs to bypass authentication and gain unauthorized access to relays, enabling control or disabling of protection functions.
Immediate action required
- affected< V2.70
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.