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TI-2018-10988 Aliases CVE-2018-15428GHSA-qx9h-fggw-hc55

Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability

Priority LOW 34CWE-20Published · Updated

Key facts

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

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

A vulnerability in the implementation of Border Gateway Protocol (BGP) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain BGP update messages. An attacker could exploit this vulnerability by sending BGP update messages that include a specific, malformed attribute to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit this vulnerability, the malicious BGP update message would need to come from a configured, valid BGP peer, or would need to be injected by the attacker into the victim's BGP network on an existing, valid TCP connection to a BGP peer.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01954 80th 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
No
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 XR Softwareall versions—No fix listedCNA
  • Cisco IOS XR Software VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 19

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios_xr:6.0.1:*:*:*:*:*:*:*6.0.1VulnerableCisco
cpe:2.3:o:cisco:ios_xr:6.0.2:*:*:*:*:*:*:*6.0.2VulnerableCisco
cpe:2.3:o:cisco:ios_xr:6.1.1:*:*:*:*:*:*:*6.1.1VulnerableCisco
cpe:2.3:o:cisco:ios_xr:6.1.2:*:*:*:*:*:*:*6.1.2VulnerableCisco
cpe:2.3:o:cisco:ios_xr:6.1.3:*:*:*:*:*:*:*6.1.3VulnerableCisco
cpe:2.3:o:cisco:ios_xr:6.1.4:*:*:*:*:*:*:*6.1.4VulnerableCisco
cpe:2.3:o:cisco:ios_xr:6.2.1:*:*:*:*:*:*:*6.2.1VulnerableCisco
cpe:2.3:o:cisco:ios_xr:6.2.2:*:*:*:*:*:*:*6.2.2VulnerableCisco
cpe:2.3:o:cisco:ios_xr:6.2.3:*:*:*:*:*:*:*6.2.3VulnerableCisco
cpe:2.3:o:cisco:ios_xr:6.4.1:*:*:*:*:*:*:*6.4.1VulnerableCisco
  • cpe:2.3:o:cisco:ios_xr:6.0.1:*:*:*:*:*:*:* Versions 6.0.1 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xr:6.0.2:*:*:*:*:*:*:* Versions 6.0.2 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xr:6.1.1:*:*:*:*:*:*:* Versions 6.1.1 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xr:6.1.2:*:*:*:*:*:*:* Versions 6.1.2 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xr:6.1.3:*:*:*:*:*:*:* Versions 6.1.3 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xr:6.1.4:*:*:*:*:*:*:* Versions 6.1.4 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xr:6.2.1:*:*:*:*:*:*:* Versions 6.2.1 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xr:6.2.2:*:*:*:*:*:*:* Versions 6.2.2 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xr:6.2.3:*:*:*:*:*:*:* Versions 6.2.3 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios_xr:6.4.1:*:*:*:*:*:*:* Versions 6.4.1 Vulnerable ·Cisco
Show 9 more CPE
CPEVersionsRoleVendor
cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:*not specified by NVDRunning onCisco
  • cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
  • cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-15428
  2. 2026-10-03 Alias added: GHSA-qx9h-fggw-hc55

References

Advisory 1

  • TI-2020-02680 Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2018-00135 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.8
  • TI-2020-03113 Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerabilities KEVCVSS 3.1HIGH 8.6
  • TI-2020-03110 Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability KEVCVSS 3.1HIGH 8.6
  • TI-2018-00142 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.0
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
See all 199 →

Sources

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