Vulnerability of insecure signatures in the OsuLogin module.

published 2023-08-13 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-43117

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits: 0; none known

Vulnerability of insecure signatures in the OsuLogin module. Successful exploitation of this vulnerability may cause OsuLogin to be maliciously modified and overwritten.

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 y ago (2024-10-10)

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

Huawei HarmonyOS
Huawei EMUI

Classification

Weakness

CWE-16 Configuration
CWE-347 Improper Verification of Cryptographic Signature

References

consumer.huawei.com /en/support/bulletin/2023/8/
vendor-advisory
device.harmonyos.com /en/docs/security/update/security-bulletins-202308-0000001667644725
vendor-advisory

Sources

CVE List CVE-2023-39392
NVD CVE-2023-39392

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Summary