High

Guessable SNMP Community Name

IdentifiersCVE-1999-0516CWE-521

The vulnerability is due to the use of easily guessable SNMP community names, such as 'public' or 'private', which can allow unauthorized access to SNMP-managed devices. Attackers can leverage this to read or modify device configurations if the community string is not changed from its default or is otherwise predictable.

For your environment

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

An attacker who can guess the SNMP community name may gain unauthorized read or write access to SNMP-enabled devices, potentially exposing sensitive configuration data or allowing modification of device settings, leading to further compromise of network infrastructure.

Mitigation

If you can’t patch tonight, do this now.

Implement access control lists (ACLs) to restrict SNMP access to trusted management hosts, use SNMPv3 with authentication and encryption where possible, and monitor for unauthorized SNMP access attempts.

Remediation

Patch, then assume compromise.

Change all SNMP community names from their default values to strong, unique strings. Ensure that SNMP write access is disabled unless absolutely necessary, and restrict SNMP access to trusted hosts only.

PUBLIC EXPLOITS

Exploits

No valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.

VALID 0 / 2 TOTALView more in app

All candidate exploits were filtered out by Mallory's validation.

ACTIVITY FEED

Recent activity

No public activity tracked yet. Mallory keeps watching.

0 SOURCESView more in app

No public activity observed for this vulnerability.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity