CVE-2020-6058: An exploitable out-of-bounds read vulnerability exists in the way MiniSNMPD version 1.4 parses incoming SNMP p

This week

CRITICAL 9.1REMOTEDOWNGRADE

CVE-2020-6058 is a critical-severity flaw (CVSS 9.1) 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 the disclosure of sensitive information and denial of service. To trigger this vulnerability, an attacker needs to send a specially crafted packet to the vulnerable server.

Why this priority

Critical 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	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-125
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-2020-6058?

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

Is CVE-2020-6058 being exploited?

CVE-2020-6058 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-2020-6058 affect?

CVE-2020-6058 affects minisnmpd. Severity is critical (CVSS 9.1). 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 the disclosure of sensitive

How urgent is CVE-2020-6058?

Priority 63/100. Critical 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-2020-6059 HIGH 8.2 DOWNGRADE An exploitable out of bounds read vulnerability exists in the way MiniSNMPD version 1.4 parses incoming SNMP p

References

← Back to latest CVEs