CVE Feed

    Dashboard / CVE / CVE-2019-16928

    CVE-2019-16928

    Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than CVE-2019-15846. There is a heap-based buffer overflow in string_vformat in string.c involving a long EHLO command.

    Published:Sep 27, 2019
    Last Modified:Nov 7, 2025
    EPS:Sep 27, 2019
    EPSS Score:0.89532
    CVSS Score:9.8

    CISA Notification

    Description

    Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than CVE-2019-15846. There is a heap-based buffer overflow in string_vformat in string.c involving a long EHLO command.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    Mar 17, 2022
    1639 days ago
    Alert Date
    Mar 3, 2022
    1653 days ago

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Exim
    Product
    Exim
    Vendor
    Fedoraproject
    Product
    Fedora

    Exploits

    http://www.openwall.com/lists/oss-security/2019/09/28/1http://www.openwall.com/lists/oss-security/2019/09/28/2http://www.openwall.com/lists/oss-security/2019/09/28/1http://www.openwall.com/lists/oss-security/2019/09/28/2

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://www.openwall.com/lists/oss-security/2019/09/28/1
    http://www.openwall.com/lists/oss-security/2019/09/28/2
    http://www.openwall.com/lists/oss-security/2019/09/28/3
    http://www.openwall.com/lists/oss-security/2019/09/28/4
    https://bugs.exim.org/show_bug.cgi?id=2449
    https://git.exim.org/exim.git/commit/478effbfd9c3cc5a627fc671d4bf94d13670d65f
    https://lists.exim.org/lurker/message/20190927.032457.c1044d4c.en.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EED7HM3MFIBAP5OIMJAFJ35JAJABTVSC/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T3TJW4HPYH3O5HZCWGD6NSHTEBTTAPDC/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UY6HPRW7MR3KBQ5JFHH6OXM7YCZBJCOB/
    https://seclists.org/bugtraq/2019/Sep/60
    https://security.gentoo.org/glsa/202003-47
    https://usn.ubuntu.com/4141-1/
    https://www.debian.org/security/2019/dsa-4536
    http://www.openwall.com/lists/oss-security/2019/09/28/1
    http://www.openwall.com/lists/oss-security/2019/09/28/2
    http://www.openwall.com/lists/oss-security/2019/09/28/3
    http://www.openwall.com/lists/oss-security/2019/09/28/4
    https://bugs.exim.org/show_bug.cgi?id=2449
    https://git.exim.org/exim.git/commit/478effbfd9c3cc5a627fc671d4bf94d13670d65f
    https://lists.exim.org/lurker/message/20190927.032457.c1044d4c.en.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EED7HM3MFIBAP5OIMJAFJ35JAJABTVSC/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T3TJW4HPYH3O5HZCWGD6NSHTEBTTAPDC/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UY6HPRW7MR3KBQ5JFHH6OXM7YCZBJCOB/
    https://seclists.org/bugtraq/2019/Sep/60
    https://security.gentoo.org/glsa/202003-47
    https://usn.ubuntu.com/4141-1/
    https://www.debian.org/security/2019/dsa-4536
    https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-16928

    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