CVE-2020-6059: An exploitable out of bounds read vulnerability exists in the way MiniSNMPD version 1.4 parses incoming SNMP p

This week

HIGH 8.2REMOTEDOWNGRADE

CVE-2020-6059 is a high-severity flaw (CVSS 8.2) affecting minisnmpd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An exploitable out of bounds read vulnerability exists in the way MiniSNMPD version 1.4 parses incoming SNMP packets. A specially crafted SNMP request can trigger an out of bounds memory read which can result in sensitive information disclosure and Denial Of Service. In order to trigger this vulnerability, an attacker needs to send a specially crafted packet to the vulnerable server.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.6% (top 15%)
CISA exploited list	No
Weakness	CWE-190
Published	2020-02-04
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: minisnmpd project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-02-04 20:15 UTCPublished CVE record published
2026-06-17 03:22 UTCUpdated Record last modified

minisnmpd project minisnmpd DOWNGRADE

Affected: 1.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.4

1. Check installed version

apt-cache policy minisnmpd || rpm -q minisnmpd || minisnmpd --version

2. No fixed release: DOWNGRADE to a release before 1.4 (Debian / Ubuntu)

apt-cache madison minisnmpd sudo apt install minisnmpd=<VERSION_BEFORE_1.4> sudo apt-mark hold minisnmpd

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list minisnmpd sudo dnf downgrade minisnmpd-<VERSION_BEFORE_1.4> sudo dnf versionlock add minisnmpd

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-6059?

minisnmpd: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-6059 being exploited?

CVE-2020-6059 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-6059 affect?

CVE-2020-6059 affects minisnmpd. Severity is high (CVSS 8.2). An exploitable out of bounds read vulnerability exists in the way MiniSNMPD version 1.4 parses incoming SNMP packets. A specially crafted SNMP request can trigger an out of bounds memory read which can result in sensitive information disclo

How urgent is CVE-2020-6059?

Priority 60/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-6060 HIGH 7.5 DOWNGRADE A stack buffer overflow vulnerability exists in the way MiniSNMPD version 1.4 handles multiple connections
CVE-2020-6058 CRITICAL 9.1 DOWNGRADE An exploitable out-of-bounds read vulnerability exists in the way MiniSNMPD version 1.4 parses incoming SNMP p

References

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