How severe is CVE-2021-33975?

CVE-2021-33975 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-33975 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-33975?

CVE-2021-33975 affects Browser.360 Safe Browser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-33975?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-33975 published?

CVE-2021-33975 was published on 2023-04-19 and last updated on 2026-06-17.

CVE-2021-33975

CVE-2021-33975 is a critical-severity vulnerability in Browser.360 Safe Browser with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Browser.360 Safe Browser
Published: 2023-04-19
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2021-33975?: Buffer Overflow vulnerability in Qihoo 360 Total Security v10.8.0.1060 and v10.8.0.1213 allows attacker to escalate privileges.
How severe is CVE-2021-33975?: CVE-2021-33975 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-33975 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-33975?: CVE-2021-33975 affects Browser.360 Safe Browser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-33975?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-33975 published?: CVE-2021-33975 was published on 2023-04-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:browser.360:safe_browser:13.0.2170.0:*:*:*:*:*:*:*

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CVE-2021-33972 — Critical (CVSS 10.0): Buffer Overflow vulnerability in Qihoo 360 Safe Browser v13.0.2170.0 allows attacker to escalate priveleges.

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