CVE-2021-20791
Improper access control vulnerability in RevoWorks Browser 2.1.230 and earlier allows an attacker to bypass access restriction and to exchange unauthorized files between the local environment and the isolated environment or settings of the web browser…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.84%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Improper access control vulnerability in RevoWorks Browser 2.1.230 and earlier allows an attacker to bypass access restriction and to exchange unauthorized files between the local environment and the isolated environment or settings of the web browser via unspecified vectors.
- CVSS 3.1
- 9.3 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
- EPSS
- 0.84% probability · 58th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- jscom/revoworks browser
- Source
- vultures@jpcert.or.jp
EPSS 0.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://jscom.jp/news-20210910_2/Vendor Advisory
- https://jvn.jp/en/jp/JVN81658818/index.htmlThird Party Advisory
- https://jscom.jp/news-20210910_2/Vendor Advisory
- https://jvn.jp/en/jp/JVN81658818/index.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.