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CVE-2026-49306

Quick assessment

Affected
Huawei HarmonyOS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Huawei HarmonyOS是中国Huawei公司的一个分布式操作系统平台。 Huawei HarmonyOS 6.1.0版本存在资源管理错误漏洞，该漏洞源于时间和时区模块存在释放后重用问题，可能导致可用性受到影响。

CVSS 3.3 · Low EPSS 0.08% · P0

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
Huawei HarmonyOS 6.1.0 affected
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I. Basic Information for CVE-2026-49306

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
UAF vulnerability in the time and time zone module. Impact: Successful exploitation of this vulnerability may affect availability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Huawei HarmonyOS 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Huawei HarmonyOS是中国Huawei公司的一个分布式操作系统平台。 Huawei HarmonyOS 6.1.0版本存在资源管理错误漏洞，该漏洞源于时间和时区模块存在释放后重用问题，可能导致可用性受到影响。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Huawei HarmonyOS 6.1.0 -

II. Public POCs for CVE-2026-49306

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III. Intelligence Information for CVE-2026-49306

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Vendor Advisories for CVE-2026-49306 (4)

Same Patch Batch · Huawei · 2026-08-17 · 10 CVEs total

CVE-2026-49301 6.2 MEDIUM Huawei HarmonyOS 信息泄露漏洞
CVE-2026-49305 6.2 MEDIUM Huawei HarmonyOS 异常处理不当漏洞
CVE-2026-49304 6.2 MEDIUM Huawei HarmonyOS 权限许可和访问控制问题漏洞
CVE-2026-49302 6.2 MEDIUM Huawei HarmonyOS 信息泄露漏洞
CVE-2026-49307 6.2 MEDIUM Huawei HarmonyOS 信息泄露漏洞
CVE-2026-49308 5.5 MEDIUM Huawei HarmonyOS 权限许可和访问控制问题漏洞
CVE-2026-49303 5.1 MEDIUM Huawei HarmonyOS 权限许可和访问控制问题漏洞
CVE-2026-58561 4.0 MEDIUM Huawei HarmonyOS 异常处理不当漏洞
CVE-2026-58560 4.0 MEDIUM Huawei HarmonyOS 异常处理不当漏洞

IV. Related Vulnerabilities

Same product: HarmonyOS
Same vendor: Huawei
Same weakness: CWE-416

V. Comments for CVE-2026-49306

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