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TI-2019-01372 Aliases CVE-2019-1747GHSA-7j37-qcxx-cjxp

Cisco IOS and IOS XE Software Short Message Service Denial of Service Vulnerability

Priority MEDIUM 48CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A vulnerability in the implementation of the Short Message Service (SMS) handling functionality of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition on an affected device. The vulnerability is due to improper processing of SMS protocol data units (PDUs) that are encoded with a special character set. An attacker could exploit this vulnerability by sending a malicious SMS message to an affected device. A successful exploit could allow the attacker to cause the wireless WAN (WWAN) cellular interface module on an affected device to crash, resulting in a DoS condition that would require manual intervention to restore normal operating conditions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0239 84th 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 and IOS XE Software16.10.1—No fix listedCNA
  • Cisco IOS and IOS XE Software VendorCisco Affected 16.10.1 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios:15.8\(3\)m:*:*:*:*:*:*:*15.8(3)mVulnerableCisco
cpe:2.3:o:cisco:ios_xe:16.10.1:*:*:*:*:*:*:*16.10.1VulnerableCisco
  • cpe:2.3:o:cisco:ios:15.8\(3\)m:*:*:*:*:*:*:* Versions 15.8(3)m Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xe:16.10.1:*:*:*:*:*:*:* Versions 16.10.1 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-1747
  2. 2026-10-03 Alias added: GHSA-7j37-qcxx-cjxp

References

Patch 1

  • 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