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TI-2018-10939 Aliases CVE-2018-15377GHSA-88ph-qq7q-p3qv

Cisco IOS and IOS XE Software Plug and Play Agent Memory Leak Vulnerability

Priority MEDIUM 46CWE-400Published · 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
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.

Summary

A vulnerability in the Cisco Network Plug and Play agent, also referred to as the Cisco Open Plug-n-Play agent, of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a memory leak on an affected device. The vulnerability is due to insufficient input validation by the affected software. An attacker could exploit this vulnerability by sending invalid data to the Cisco Network Plug and Play agent on an affected device. A successful exploit could allow the attacker to cause a memory leak on the affected device, which could cause the device to reload.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01587 75th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
CiscoCisco IOS Softwareall versions—No fix listedCNA
  • Cisco IOS Software VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios:15.7\(3.1s\)m:*:*:*:*:*:*:*15.7(3.1s)mVulnerableCisco
cpe:2.3:o:cisco:ios:denali-16.3.6:*:*:*:*:*:*:*denali-16.3.6VulnerableCisco
cpe:2.3:o:cisco:ios:everest-16.5.1:*:*:*:*:*:*:*everest-16.5.1VulnerableCisco
  • cpe:2.3:o:cisco:ios:15.7\(3.1s\)m:*:*:*:*:*:*:* Versions 15.7(3.1s)m Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios:denali-16.3.6:*:*:*:*:*:*:* Versions denali-16.3.6 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios:everest-16.5.1:*:*:*:*:*:*:* Versions everest-16.5.1 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-15377
  2. 2026-10-03 Alias added: GHSA-88ph-qq7q-p3qv

References

Advisory 2

  • TI-2018-00138 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-09019 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-02977 Improper input validation in Cisco IOS and IOS XE Software KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-00135 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.8
  • TI-2017-04499 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
  • TI-2017-04498 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
See all 617 →

Sources

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