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TI-2015-04735 Aliases CVE-2015-5621GHSA-w7cc-jv4p-qccr

The snmp_pdu_parse function in snmp_api.c in net-snmp 5.7.2 and earlier does not remove…

Priority HIGH 72CWE-190Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-190 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.38322 98th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
Fix Fixed Red Hat: 1 advisory

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:net-snmp:net-snmp:*:*:*:*:*:*:*:*up to 5.7.2Vulnerablenet-snmp
  • cpe:2.3:a:net-snmp:net-snmp:*:*:*:*:*:*:*:* Versions up to 5.7.2 Vulnerable ·net-snmp

Remediation

Red Hat 1 advisory

  • RHSA-2015:1636 Released 2015-08-17 · Red Hat rating Moderate
    net-snmp security update
    • Red Hat Enterprise Linux Client (v. 7) net-snmp-1:5.7.2-20.el7_1.1, net-snmp-agent-libs-1:5.7.2-20.el7_1.1, net-snmp-libs-1:5.7.2-20.el7_1.1 +1
    • Red Hat Enterprise Linux Client Optional (v. 7) net-snmp-devel-1:5.7.2-20.el7_1.1, net-snmp-gui-1:5.7.2-20.el7_1.1, net-snmp-perl-1:5.7.2-20.el7_1.1 +2
    • Red Hat Enterprise Linux ComputeNode (v. 7) net-snmp-1:5.7.2-20.el7_1.1, net-snmp-agent-libs-1:5.7.2-20.el7_1.1, net-snmp-libs-1:5.7.2-20.el7_1.1 +1
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) net-snmp-devel-1:5.7.2-20.el7_1.1, net-snmp-gui-1:5.7.2-20.el7_1.1, net-snmp-perl-1:5.7.2-20.el7_1.1 +2
    • Red Hat Enterprise Linux Desktop (v. 6) net-snmp-1:5.5-54.el6_7.1, net-snmp-libs-1:5.5-54.el6_7.1
    • Red Hat Enterprise Linux Desktop Optional (v. 6) net-snmp-devel-1:5.5-54.el6_7.1, net-snmp-perl-1:5.5-54.el6_7.1, net-snmp-python-1:5.5-54.el6_7.1 +1
    • Red Hat Enterprise Linux HPC Node (v. 6) net-snmp-1:5.5-54.el6_7.1, net-snmp-libs-1:5.5-54.el6_7.1, net-snmp-perl-1:5.5-54.el6_7.1 +2
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) net-snmp-devel-1:5.5-54.el6_7.1
    • Red Hat Enterprise Linux Server (v. 6) net-snmp-1:5.5-54.el6_7.1, net-snmp-devel-1:5.5-54.el6_7.1, net-snmp-devel-1:5.5-54.el6_7.1.ppc +5
    • Red Hat Enterprise Linux Server (v. 7) net-snmp-1:5.7.2-20.ael7b_1.1, net-snmp-1:5.7.2-20.el7_1.1, net-snmp-agent-libs-1:5.7.2-20.ael7b_1.1 +10
    • Red Hat Enterprise Linux Server Optional (v. 7) net-snmp-gui-1:5.7.2-20.ael7b_1.1, net-snmp-gui-1:5.7.2-20.el7_1.1, net-snmp-perl-1:5.7.2-20.ael7b_1.1 +5
    • Red Hat Enterprise Linux Workstation (v. 6) net-snmp-1:5.5-54.el6_7.1, net-snmp-devel-1:5.5-54.el6_7.1, net-snmp-libs-1:5.5-54.el6_7.1 +3
    • Red Hat Enterprise Linux Workstation (v. 7) net-snmp-1:5.7.2-20.el7_1.1, net-snmp-agent-libs-1:5.7.2-20.el7_1.1, net-snmp-devel-1:5.7.2-20.el7_1.1 +2
    • Red Hat Enterprise Linux Workstation Optional (v. 7) net-snmp-gui-1:5.7.2-20.el7_1.1, net-snmp-perl-1:5.7.2-20.el7_1.1, net-snmp-python-1:5.7.2-20.el7_1.1 +1

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2015:1636
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2015:1636
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2015:1636
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2015:1636
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2015:1636
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2015:1636
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2015:1636
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2015:1636
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2015:1636
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2015:1636
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2015:1636
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2015:1636
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2015:1636
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2015:1636

Timeline

  1. 2026-10-02 Threatist record created from CVE-2015-5621
  2. 2026-10-03 Alias added: GHSA-w7cc-jv4p-qccr

References

Exploit 2

Advisory 4

Other 7

  • TI-2025-42133 Net-SNMP snmptrapd crash CVSS 3.1CRITICAL 9.8
  • TI-2018-12840 snmp_oid_compare in snmplib/snmp_api.c in Net-SNMP before 5.8 has a NULL Pointer… CVSS 3.1HIGH 7.5
  • TI-2022-22058 handle_ipv6IpForwarding in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP 5.4.3 through… CVSS 3.1MEDIUM 6.5
  • TI-2022-22057 handle_ipDefaultTTL in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP 5.8 through 5.9.3… CVSS 3.1MEDIUM 6.5
  • TI-2007-05612 The SNMP agent (snmp_agent.c) in net-snmp before 5.4.1 allows remote attackers to cause a… CVSS 2.0HIGH 7.8
  • TI-2005-04567 snmp_api.c in snmpd in Net-SNMP 5.2.x before 5.2.2, 5.1.x before 5.1.3, and 5.0.x before… CVSS 2.0HIGH 10.0
See all 34 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences