HarmonyOS CVE-2026-101186

The CVE description identifies the affected feature as the HarmonyOS 'window module', but does not state the specific protocol, configuration, or input required to trigger the denial of service - the trigger is not described in the available sources. The vendor vector (AV:N/AC:L/PR:N/UI:N) implies no authentication, no user interaction, and no special configuration are needed, so if the network vector holds it affects default deployments. The principal limiting factor is the impact ceiling: availability only, with no confidentiality or integrity consequence. A second caveat is that a 'window module' (UI/display subsystem) flaw may in practice require local or interaction-bound access despite the AV:N assignment; this should be verified against the Huawei bulletin as it materially narrows realistic exposure.

The vendor CVSS of 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) scores this as an availability-only denial-of-service with no confidentiality or integrity impact, reachable over the network with low complexity and no privileges or user interaction. The real-world priority signals are moderate rather than acute: there is no CISA KEV listing (not confirmed actively exploited), no PoC or exploit reference is present in the provided data, and no EPSS probability was supplied, so widespread or imminent exploitation cannot be substantiated from the inputs. The vuln.today decision label is 'this_week', which is an elevated-but-not-emergency urgency consistent with a network-reachable availability bug lacking confirmed exploitation. One signal conflicts and should be verified: the affected component is described as the 'window module', which typically denotes an on-device UI/display subsystem implying local or interaction-bound triggering, yet the vendor assigned AV:N (network) - the description does not state how the flaw is triggered, so the network-reachability assumption should be confirmed with Huawei before treating this as remotely exploitable. Net: a genuine availability risk worth patching on a near-term cycle, but absent KEV/EPSS/PoC evidence it is not an actively-exploited emergency.

A remote attacker sends crafted input to the affected window module of a HarmonyOS device, triggering a fault that degrades or crashes the targeted service or device, impacting availability only. No public exploit or PoC reference is present in the provided data, and the exact trigger is not described in the available sources. Per the vendor vector this needs no authentication or user interaction, though the network-reachability of a 'window module' flaw should be confirmed.