TI-2015-00724 Aliases CVE-2015-0776 GHSA-6p7f-fgg5-pfgg

telnetd in Cisco IOS XR 5.0.1 on Network Convergence System 6000 devices allows remote…

LOW 26CWE-399Published 2015-06-12 · Updated 2024-08-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: — Not recorded in CVSS 2.0
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Partial
Fix status: No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.

Summary

telnetd in Cisco IOS XR 5.0.1 on Network Convergence System 6000 devices allows remote attackers to cause a denial of service (device reload) via a malformed TELNET packet, aka Bug ID CSCuq31566.

Why it matters now

EPSS 0.01428 73rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:ios_xr:5.0.1:::::::*	5.0.1	Vulnerable	Cisco
cpe:2.3:h:cisco:network_convergence_system_6008::::::::	all versions	Running on	Cisco

cpe:2.3:o:cisco:ios_xr:5.0.1:*:*:*:*:*:*:* Versions 5.0.1 Vulnerable ·Cisco
cpe:2.3:h:cisco:network_convergence_system_6008:*:*:*:*:*:*:*:* Versions all versions Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2015-0776
2026-10-03 Alias added: GHSA-6p7f-fgg5-pfgg

References

Advisory 1

20150610 Cisco IOS XR telnetd Packet Processing Denial of Service Vulnerability

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