CVE-2020-6060: A stack buffer overflow vulnerability exists in the way MiniSNMPD version 1.4 handles multiple connections

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HIGH 7.5REMOTEDOWNGRADE

CVE-2020-6060 is a high-severity flaw (CVSS 7.5) affecting minisnmpd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A stack buffer overflow vulnerability exists in the way MiniSNMPD version 1.4 handles multiple connections. A specially timed sequence of SNMP connections can trigger a stack overflow, resulting in a denial of service. To trigger this vulnerability, an attacker needs to simply initiate multiple connections to the 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	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.2% (top 18%)
CISA exploited list	No
Weakness	CWE-787
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-2020-6060?

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

Is CVE-2020-6060 being exploited?

CVE-2020-6060 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-2020-6060 affect?

CVE-2020-6060 affects minisnmpd. Severity is high (CVSS 7.5). A stack buffer overflow vulnerability exists in the way MiniSNMPD version 1.4 handles multiple connections. A specially timed sequence of SNMP connections can trigger a stack overflow, resulting in a denial of service. To trigger this vulne

How urgent is CVE-2020-6060?

Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

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
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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