EUVD-2026-21792
GHSA-wr2h-3c4w-c34q
Severity by source
AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
4DescriptionCVE.org
Race condition vulnerability in the notification service. Impact: Successful exploitation of this vulnerability may affect availability.
AnalysisAI
Race condition in Huawei HarmonyOS notification service allows local high-privilege attackers to cause limited availability impact through timing-dependent exploitation. CVSS 1.9 reflects minimal real-world risk due to high attack complexity, elevated privileges, and no confidentiality or integrity effects. No public exploit code or active exploitation confirmed.
Technical ContextAI
The vulnerability exists in HarmonyOS notification service as a classic race condition (CWE-362), where concurrent access to shared resources during notification processing creates a window for state manipulation. Attack requires local system access with high privileges (PR:H per CVSS vector), meaning the attacker must already be an administrative or system user. The vulnerability affects resource availability rather than data confidentiality or integrity, limiting practical impact to denial of service of notification functionality.
RemediationAI
Apply the security patch from Huawei's official advisory at https://consumer.huawei.com/en/support/bulletin/2026/4/. Patch availability and specific version numbers should be confirmed via Huawei's support portal. As an interim measure, restrict administrative access and monitor notification service logs for suspicious timing patterns. This vulnerability requires administrative-level access, so principle of least privilege mitigation is effective.
Out-of-bounds heap write in Huawei HarmonyOS WEB module allows unauthenticated remote attackers to execute arbitrary cod
Permission verification vulnerability in the wpa_supplicant module Impact: Successful exploitation of this vulnerability
Permission management vulnerability in the PMS module. Rated critical severity (CVSS 9.8), this vulnerability is remotel
Vulnerability of access permissions not being strictly verified in the APPWidget module.Successful exploitation of this
Vulnerability of permissions not being strictly verified in the window management module.Successful exploitation of this
API permission management vulnerability in the Fwk-Display module.Successful exploitation of this vulnerability may caus
Vulnerability of defects introduced in the design process in the HiviewTunner module. Rated critical severity (CVSS 9.8)
The DP module has a service hijacking vulnerability.Successful exploitation of this vulnerability may affect some Super
Vulnerability of out-of-bounds parameter read/write in the Wi-Fi module. Rated critical severity (CVSS 9.8), this vulner
Vulnerability of commands from the modem being intercepted in the atcmdserver module. Rated critical severity (CVSS 9.8)
Some smartphones have configuration issues. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitab
Some smartphones have the out-of-bounds write vulnerability. Rated critical severity (CVSS 9.8), this vulnerability is r
Same weakness CWE-362 – Race Condition
View allSame technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today