CVE-2021-25263 json
Local privilege vulnerability in Yandex Browser for Windows prior to 21.9.0.390 allows a local, low privileged, attacker to execute arbitar…
published 2021-08-17 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-12174
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 36%
- public exploits
- 0
- none known
Summary
Local privilege vulnerability in Yandex Browser for Windows prior to 21.9.0.390 allows a local, low privileged, attacker to execute arbitary code with the SYSTEM privileges through manipulating files in directory with insecure permissions during Yandex Browser update process.
Patch / fix
- yandex yandex_browser 21.9.0.390
Exploit prediction
0.41% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- n/a Yandex Browser (Desktop)
Classification
- Weakness
-
- CWE-732 Incorrect Permission Assignment for Critical Resource
References
-
yandex.com
/bugbounty/i/hall-of-fame-browser/
vendor-advisory
Sources
- CVE List CVE-2021-25263
- NVD CVE-2021-25263
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