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CVE-2017-7758

An out-of-bounds read vulnerability with the Opus encoder when the number of channels in an audio stream changes while the encoder is in…

Critical9.1EPSS 3.0%
Published
Updated
Reserved
Assigned by
mozilla

Description

An out-of-bounds read vulnerability with the Opus encoder when the number of channels in an audio stream changes while the encoder is in use. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

Scores

CVSS scores of CVE-2017-7758, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.0Critical9.1CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS (exploitation in 30 days)
3.0% · top 12% of all CVEs (3 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.

Weakness

Affected products

  • Mozilla · Firefox

    • affected unspecified – < 54

  • Mozilla · Firefox ESR

    • affected unspecified – < 52.2

  • Mozilla · Thunderbird

    • affected unspecified – < 52.2

References (10)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .