THREATPORT/VULNERABILITY/CVE-2015-5621
HIGH SEVERITY

CVE-2015-5621

Net Snmp vulnerability

CVSS
7.5
EPSS
40.0%
EPSS pct
98th
Exploited
No known
The snmp_pdu_parse function in snmp_api.c in net-snmp 5.7.2 and earlier does not remove the varBind variable in a netsnmp_variable_list item when parsing of the SNMP PDU fails, which allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted packet.
Affected vendor
Net Snmp
Affected product
Net Snmp
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
Published
2015-08-19

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 40.0% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2015-5621

  • Confirm whether Net Snmp Net Snmp is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2015-5621.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2015-5621

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2015-5621 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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