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CVE-2017-5446

An out-of-bounds read when an HTTP/2 connection to a servers sends "DATA" frames with incorrect data content. This leads to a potentially…

Critical9.8EPSS 3.0%
Published
Updated
Reserved
Assigned by
mozilla

Description

An out-of-bounds read when an HTTP/2 connection to a servers sends "DATA" frames with incorrect data content. This leads to a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Scores

CVSS scores of CVE-2017-5446, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.0Critical9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
3.0% · top 13% of all CVEs (2 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Weakness

Affected products

  • Mozilla · Thunderbird

    • affected unspecified – < 52.1

  • Mozilla · Firefox ESR

    • affected unspecified – < 45.9
    • affected unspecified – < 52.1

  • Mozilla · Firefox

    • affected unspecified – < 53

References (11)

Sources

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

Record last updated .