Vulnerability in Blizzard Battle.net
CVE-2020-27383
Battle.net.exe in Battle.Net 1.27.1.12428 suffers from an elevation of privileges vulnerability which can be used by an "Authenticated User" to modify the existing executable file with a binary of his choice. The vulnerability exist due to weak set of permissions being granted to the "Authenticated Users Group" which grants the (F) Flag aka "Full Control"
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (22.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Blizzard Battle.net — versions 1.27.1.12428
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/FreySolarEye/CVE/blob/master/Battle Net Launcher Local Privilege Esc… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27383?
- CVE-2020-27383 is a high-severity vulnerability in Blizzard Battle.net, classified under Improper Preservation of Permissions. CVSS score: 7.8/10. Published 2021-06-09.
- How severe is CVE-2020-27383?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-27383 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.