CVE-2021-25263 Privilege escalation in Yandex Browser (Desktop)
Local attackers can execute arbitrary code with SYSTEM privileges by manipulating files during the Yandex Browser update process due to insecure directory permissions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-25263?
CVE-2021-25263 is a high-severity vulnerability in Yandex Browser (Desktop), published on 17 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-732
Which versions are affected by CVE-2021-25263?
It affects 1 product.
Products include Yandex Yandex Browser.
How do I fix CVE-2021-25263?
No fix has been published for CVE-2021-25263 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-25263 being exploited?
There is no known exploitation of CVE-2021-25263 in the wild and no public exploit code.
Other vulnerabilities in Yandex Browser (Desktop)
- CVE-2024-6473 DLL Hijacking in Yandex Browser
- CVE-2021-25255 Yandex Browser Lite for Android prior to version 21.1.0 allows remote attackers to cause a denial of service.
- CVE-2021-25254 Yandex Browser Lite for Android before 21.1.0 allows remote attackers to spoof the address bar.
- CVE-2021-25261 Privilege escalation in Yandex Browser (Desktop)
- CVE-2022-28225 Privilege escalation in Yandex Browser (Desktop)
Sources
Also known as GHSA-37r4-xgj4-h786.