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What are the severity rating and CVSS score of CVE-2026-77642?

The vulnerability CVE-2026-77642 has a severity score of 7.5 out of 10.0, which is classified as HIGH severity.

Which products and vendors are affected by CVE-2026-77642?

This vulnerability affects Tor from torproject.

How can I mitigate or patch CVE-2026-77642?

Consult the vendor's security advisory for details and patches.

CVE-2026-77642: CVE-2026-77642 Vulnerability (HIGH Severity, CVSS: 7.5)

Description

tor before 0.4.9.9 was prone to an out-of-bounds write when parsing a consensus or detached signature with unexpected signature digest type. Impact is minor for most Tor roles, but potentially major for directory authorities. This is TROVE-2026-019.

Executive Summary

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Technical Details

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Mitigations

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References

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Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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Additional Metadata

{
  "score": "7.5",
  "pubDate": "2026-08-20T22:18:06.070Z",
  "pubdate": "2026-08-20T22:18:06.070Z"
}

Sceawere

CVE-2026-77642 Verified Sceawere Triage Sources: NVD / CISA KEV

Vulnerability Metadata

Narrative and Response

Description

Executive Summary

Technical Details

Mitigations

References

Additional Metadata