🛡️ CVE-2026-34858 — harmonyos

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is high, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

• Attack vector: Local — a local account, shell or session on the host is needed.
• Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
• Privileges required: High — administrative rights are needed first.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: None.
• Integrity impact: None.
• Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2026-34858 is classified as CWE-362: Race Condition. Concurrent operations share state without proper synchronisation, so timing decides whether the result is correct.

Affected software

CVE-2026-34858 is recorded against 1 package.

• harmonyos

Timeline and source

Published on 13 April 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

consumer.huawei.com
consumer.huawei.com
consumer.huawei.com

Other advisories for this package

harmonyos has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-34849 (2.5 Low, published 13 Apr 2026)
• CVE-2026-34855 (5.7 Medium, published 13 Apr 2026)
• CVE-2026-34862 (6.3 Medium, published 13 Apr 2026)
• CVE-2026-28553 (6.9 Medium, published 13 Apr 2026)
• CVE-2026-34854 (5.7 Medium, published 13 Apr 2026)
• CVE-2026-34861 (6.3 Medium, published 13 Apr 2026)
• CVE-2026-34867 (5.6 Medium, published 13 Apr 2026)
• CVE-2026-34853 (7.7 High, published 13 Apr 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-362: Race Condition) in other software:

• CVE-2025-15630 (5.9 Medium, published 3 Aug 2026)
• CVE-2025-64168 (8.0 High, published 7 Jul 2026)
• CVE-2025-68146 (6.3 Medium, published 7 Jul 2026)
• CVE-2026-0083 (7.0 High, published 17 Jun 2026)
• CVE-2026-0068 (7.8 High, published 17 Jun 2026)
• CVE-2025-13036 (published 16 Jun 2026)
• CVE-2025-15546 (5.4 Medium, published 14 Jun 2026)
• CVE-2022-26758 (7.1 High, published 10 Jun 2026)

Details

Affected Packages

References