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CVE-2020-9753

28
FAUCET Score

CVE-2020-9753 describes a critical vulnerability in Whale Browser Installer versions prior to 1.2.0.5, where the installer fails to perform signature verification for the Flash installer. This flaw, rated 9.1 CVSS (CRITICAL), allows an unauthenticated attacker to remotely achieve high impact to confidentiality and integrity without user interaction. While no active exploitation, public exploit code, or significant community discussion has been observed, the lack of signature verification presents a significant security risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.6.88.19CPE matchmatch criteria
cpe:2.3:a:naver:whale_browser_installer:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.07%
Probability of exploitation in next 30 days
EPSS Percentile
61.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0107 is in the 46th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cve.naver.com / detail/cve-2020-9753
Vendor Advisory