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    CVE-2022-28739

    There is a buffer over-read in Ruby before 2.6.10, 2.7.x before 2.7.6, 3.x before 3.0.4, and 3.1.x before 3.1.2. It occurs in String-to-Float conversion, including Kernel#Float and String#to_f.

    Published:Apr 14, 2022
    Last Modified:Nov 4, 2025
    EPS:May 9, 2022
    EPSS Score:0.00529
    CVSS Score:7.5

    Affected Products

    Vendor
    Apple
    Product
    Macos
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Software Collections
    Vendor
    Ruby-lang
    Product
    Ruby

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

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    CVE-2026-87637 (CVSS 9.6) — Use after free in Extensions in Google Chrome on on Mac prior to 153.0.8010.36 allowed a remote attacker to ex…
    CVE-2026-87535 (CVSS 6.5) — Information loss or omission in Safebrowsing in Google Chrome on on Mac prior to 153.0.8010.36 allowed a remot…
    CVE-2026-87452 (CVSS 3.1) — Incorrect authorization in GPU in Google Chrome on on Mac prior to 153.0.8010.36 allowed a remote attacker who…
    CVE-2026-87562 (CVSS 4.3) — Incorrect reference resolution in Accessibility in Google Chrome on on Mac prior to 153.0.8010.36 allowed a re…
    CVE-2026-87558 (CVSS 9.6) — Use after free in Payments in Google Chrome on on Mac prior to 153.0.8010.36 allowed a remote attacker to exec…
    CVE-2026-87607 (CVSS 9.6) — Use after free in Device in Google Chrome on on Mac prior to 153.0.8010.36 allowed a remote attacker to potent…
    CVE-2026-81984 (CVSS 5.5) — Acrobat Reader is affected by a Use After Free vulnerability that could lead to disclosure of sensitive memory…
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    References

    http://seclists.org/fulldisclosure/2022/Oct/28
    http://seclists.org/fulldisclosure/2022/Oct/29
    http://seclists.org/fulldisclosure/2022/Oct/30
    http://seclists.org/fulldisclosure/2022/Oct/41
    http://seclists.org/fulldisclosure/2022/Oct/42
    https://hackerone.com/reports/1248108
    https://lists.debian.org/debian-lts-announce/2023/06/msg00012.html
    https://security-tracker.debian.org/tracker/CVE-2022-28739
    https://security.gentoo.org/glsa/202401-27
    https://security.netapp.com/advisory/ntap-20220624-0002/
    https://support.apple.com/kb/HT213488
    https://support.apple.com/kb/HT213493
    https://support.apple.com/kb/HT213494
    https://www.ruby-lang.org/en/news/2022/04/12/buffer-overrun-in-string-to-float-cve-2022-28739/
    http://seclists.org/fulldisclosure/2022/Oct/28
    http://seclists.org/fulldisclosure/2022/Oct/29
    http://seclists.org/fulldisclosure/2022/Oct/30
    http://seclists.org/fulldisclosure/2022/Oct/41
    http://seclists.org/fulldisclosure/2022/Oct/42
    https://hackerone.com/reports/1248108
    https://lists.debian.org/debian-lts-announce/2023/06/msg00012.html
    https://lists.debian.org/debian-lts-announce/2024/09/msg00000.html
    https://security-tracker.debian.org/tracker/CVE-2022-28739
    https://security.gentoo.org/glsa/202401-27
    https://security.netapp.com/advisory/ntap-20220624-0002/
    https://support.apple.com/kb/HT213488
    https://support.apple.com/kb/HT213493
    https://support.apple.com/kb/HT213494
    https://www.ruby-lang.org/en/news/2022/04/12/buffer-overrun-in-string-to-float-cve-2022-28739/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High