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CVE Record

CVE-2021-46702: Tor Browser 9.0.7 on Windows 10 build 10586 is vulnerable to information disclosure.

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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This CVE describes a privacy failure in Tor Browser 9.0.7 on Windows 10 build 10586. A local attacker could recover information about onion services a user visited by analyzing RAM hours after use. The main business concern is exposure of sensitive browsing activity where Tor use is relied on for anonymity.

Executive priority

Prioritize if the organization depends on Tor for sensitive research, investigations, journalism, or whistleblower workflows. For general enterprise environments without Tor Browser 9.0.7 on the specified Windows build, urgency is lower but inventory should confirm exposure.

Technical view

The reported issue is improper memory cleanup in Tor Browser 9.0.7 on Windows 10 build 10586. Residual data in RAM may disclose onion-service visit information to a local attacker. The CVE record does not provide CVSS, CWE, patch details, or broader affected-version data.

Likely exposure

Exposure appears limited to endpoints running Tor Browser 9.0.7 on Windows 10 build 10586, especially shared, monitored, seized, or malware-exposed systems where local memory access is plausible.

Exploitation context

The provided sources describe local information disclosure through RAM analysis. They do not show remote exploitation, public exploitation in the wild, or CISA KEV listing. Exploitation requires local access or equivalent ability to inspect system memory.

Researcher notes

Evidence is sparse. The CVE cites Tor Browser 9.0.7 on Windows 10 build 10586 and one ScienceDirect reference. NVD-style affected product, CVSS, CWE, exploit status, and patch data are absent in the supplied bundle.

Mitigation direction

  • Identify any endpoints using Tor Browser 9.0.7 on Windows 10 build 10586.
  • Check Tor Browser vendor guidance for supported versions and security updates.
  • Avoid using the affected legacy build for anonymity-sensitive activity.
  • Restrict local administrative and physical access to systems using privacy tools.
  • Review endpoint memory acquisition and forensic handling procedures.

Validation and detection

  • Inventory Tor Browser versions and Windows builds on managed endpoints.
  • Confirm whether Tor Browser 9.0.7 exists in any standard images.
  • Review privacy-sensitive workflows that rely on Tor anonymity.
  • Check endpoint controls limiting local memory access.
  • Document findings where evidence is unavailable or unmanaged.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2021-46702 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.