What’s Vulnerable › Vulnerabilities

CVE-2019-20892

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-06-25 · updated 2026-06-17
• Weakness: CWE-415

Description

net-snmp before 5.8.1.pre1 has a double free in usm_free_usmStateReference in snmplib/snmpusm.c via an SNMPv3 GetBulk request. NOTE: this affects net-snmp packages shipped to end users by multiple Linux distributions, but might not affect an upstream release.

Affected products

• net-snmp: through 5.8
• Oracle Corporation Oracle ZFS Storage Appliance Kit: 8.8

References

• http://www.openwall.com/lists/oss-security/2020/06/25/4
• https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1877027
• https://bugzilla.redhat.com/show_bug.cgi?id=1663027
• https://github.com/net-snmp/net-snmp/commit/5f881d3bf24599b90d67a45cae7a3eb099cd71c9
• https://security.gentoo.org/glsa/202008-12
• https://sourceforge.net/p/net-snmp/bugs/2923/
• https://usn.ubuntu.com/4410-1/
• https://www.oracle.com/security-alerts/cpujan2021.html
• http://www.openwall.com/lists/oss-security/2020/06/25/4
• https://bugs.launchpad.net/ubuntu/+source/net-snmp/+bug/1877027
• https://bugzilla.redhat.com/show_bug.cgi?id=1663027
• https://github.com/net-snmp/net-snmp/commit/5f881d3bf24599b90d67a45cae7a3eb099cd71c9

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