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Fencer Vulns
critical 10.0

CVE-2021-33975 json

Buffer Overflow vulnerability in Qihoo 360 Total Security v10.8.0.1060 and v10.8.0.1213 allows attacker to escalate privileges.

published 2023-04-19 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-20646

cvss
10.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits
0
none known

Summary

Buffer Overflow vulnerability in Qihoo 360 Total Security v10.8.0.1060 and v10.8.0.1213 allows attacker to escalate privileges.

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
21 mo ago

Exploit prediction

1.37% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • youtube.com https://www.youtube.com/channel/UCLJ6fZxUqbmPe4jiwC6o4hg/ referenced PoC, tagged "exploit" by a source, unverified
  • pastebin.com https://pastebin.com/ivNL7s0n referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CNA 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.