CVE-2020-6060Public exploitNetwork attack vector

Daemon crash via stale negative file descriptor

Published Feb 4, 2020 · Updated Aug 4, 2024

Stack buffer overflow in Troglobit Mini-SNMPD 1.4 allows remote attackers to crash the daemon through timed TCP connections. The TCP-client cleanup loop decrements g_tcp_client_list_length while iterating, leaves a disconnected entry with file descriptor -1, and later passes that value to FD_SET, which writes before its stack-allocated descriptor set. No authentication or crafted SNMP payload is required; opening several TCP connections and closing alternating sockets terminates the process and interrupts SNMP service.

CVSS severity7.5
High
EPSS probability2.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in Troglobit Mini-SNMPD 1.4 allows remote attackers to crash the daemon through timed TCP connections. The TCP-client cleanup loop decrements g_tcp_client_list_length while iterating, leaves a disconnected entry with file descriptor -1, and later passes that value to FD_SET, which writes before its stack-allocated descriptor set. No authentication or crafted SNMP payload is required; opening several TCP connections and closing alternating sockets terminates the process and interrupts SNMP service.

The record

CVE
CVE-2020-6060
Published
Feb 4, 2020
Updated
Aug 4, 2024
Vendor
Troglobit
Product
Mini-SNMPD
Classifications
CWE-787, CWE-121, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 4, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Mini-SNMPD 1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Troglobit · Mini-SNMPDversion=Mini-SNMPD 1.4

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5Cisco TalosCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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