THREATPORT/VULNERABILITY/CVE-2020-13962
HIGH SEVERITY

CVE-2020-13962

Mumble vulnerability

CVSS
7.5
EPSS
3.0%
EPSS pct
86th
Exploited
No known
Qt 5.12.2 through 5.14.2, as used in unofficial builds of Mumble 1.3.0 and other products, mishandles OpenSSL's error queue, which can cause a denial of service to QSslSocket users. Because errors leak in unrelated TLS sessions, an unrelated session may be disconnected when any handshake fails. (Mumble 1.3.1 is not affected, regardless of the Qt version.)
Affected vendor
Mumble
Affected product
Mumble
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2020-06-09

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 3.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 86% of all scored CVEs.

Check your external exposure to CVE-2020-13962

  • Confirm whether Mumble Mumble is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-13962.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-13962

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