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No exploitation reportedFix available

CVE-2019-20892

No exploitation reported by the sources we read.

  • Published2020-06-25
  • WeaknessCWE-415

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2020-06-2510:15CVE publishedNVD

Versions per branch

NVD
Net-snmp
BranchAffectedFixed in
5.8≤ 5.8no fix published
Oracle zfs storage appliance kit
BranchAffectedFixed in
8.8= 8.8no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • net-snmpUbuntu:20.04:LTSall versions · fixed in 5.8+dfsg-2ubuntu2.1
  • net-snmpRed Hat:enterprise_linux:8::baseosall versions · fixed in 1:5.8-12.el8_1.1and 7 other packages
  • net-snmpRed Hat:enterprise_linux:8::appstreamall versions · fixed in 1:5.8-12.el8_1.1and 9 other packages
  • net-snmpDebian:14all versions · fixed in 5.8+dfsg-3
  • net-snmpDebian:13all versions · fixed in 5.8+dfsg-3
  • net-snmpDebian:12all versions · fixed in 5.8+dfsg-3
  • net-snmpAlpine:v3.12all versions · fixed in 5.8-r0
  • net-snmpAlpine:v3.11all versions · fixed in 5.8-r0

Vendor advisories

  • CVE-2019-20892 Red Hat Product Security84 products fixed

    net-snmp: double free in usm_free_usmStateReference function in snmplib/snmpusm.c via an SNMPv3 GetBulk request

  • RHBA-2020:1376 Red Hat Product Security84 products fixed

    Red Hat Bug Fix Advisory: net-snmp bug fix and enhancement update

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHBA-2020:1376 · 84 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Published
2020-06-25
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-8q2p-wr8q-hv7c

Frequently asked questions

What is CVE-2019-20892?

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.

Is CVE-2019-20892 actively exploited?

Active exploitation of CVE-2019-20892 has not been confirmed. Its EPSS score was 2.3% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-20892?

CVE-2019-20892 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

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Sources for this record