How severe is CVE-2021-46702?

CVE-2021-46702 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-46702 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46702?

CVE-2021-46702 affects Torproject Tor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-46702?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-46702 published?

CVE-2021-46702 was published on 2022-02-26 and last updated on 2026-06-17.

CVE-2021-46702

CVE-2021-46702 is a medium-severity vulnerability in Torproject Tor with a CVSS 3.x base score of 5.5. 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-404.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-404
Affected product: Torproject Tor
Published: 2022-02-26
Last modified: 2026-06-17

Description

Tor Browser 9.0.7 on Windows 10 build 10586 is vulnerable to information disclosure. This could allow local attackers to bypass the intended anonymity feature and obtain information regarding the onion services visited by a local user. This can be accomplished by analyzing RAM memory even several hours after the local user used the product. This occurs because the product doesn't properly free memory.

Frequently asked questions

What is CVE-2021-46702?: Tor Browser 9.0.7 on Windows 10 build 10586 is vulnerable to information disclosure. This could allow local attackers to bypass the intended anonymity feature and obtain information regarding the onion services visited by a local user. This can be accomplished by analyzing RAM memory even several hours after the local user used the product. This occurs because the product doesn't properly free memory.
How severe is CVE-2021-46702?: CVE-2021-46702 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-46702 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46702?: CVE-2021-46702 affects Torproject Tor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46702?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-46702 published?: CVE-2021-46702 was published on 2022-02-26 and last updated on 2026-06-17.

References

https://www.sciencedirect.com/science/article/pii/S0167404821001358

Affected products (1)

cpe:2.3:a:torproject:tor:9.0.7:*:*:*:*:*:*:*

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