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CVE-2021-33974

26
FAUCET Score

CVE-2021-33974 describes a set of buffer overflow vulnerabilities impacting multiple Qihoo 360 products, including 360 Safeguard, 360 Total Security, and 360 Chrome. With a CVSS score of 8.8 (High), these vulnerabilities allow remote arbitrary code execution simply by opening a malicious link in the affected browsers. The combined remote and local vulnerabilities could enable persistent control of a target system, bypassing antivirus detection. While patched by the vendor, there is no public exploit code, active exploitation, or significant community discussion reported.

Impacted Technologies

VendorProductVersion(s)CPE
10.8.0.1060CPE matchmatch criteria
cpe:2.3:a:360:total_security:10.8.0.1060:*:*:*:*:*:*:*
10.8.0.1213CPE matchmatch criteria
cpe:2.3:a:360:total_security:10.8.0.1213:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.04%
Probability of exploitation in next 30 days
EPSS Percentile
60.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0104 is in the 60th percentile among its peer group of 14,855 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

memorycorruptor.blogspot.com / p/vulnerabilities-disclosures.html
Third Party Advisory
pastebin.com / ms1ivjYe
ExploitThird Party Advisory