TI-2019-01307 Aliases CVE-2019-1681 GHSA-6v3v-c95x-rpq9

Cisco Network Convergence System 1000 Series TFTP Directory Traversal Vulnerability

MEDIUM 48CWE-200Published 2019-02-21 · Updated 2024-11-19

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-200.

Summary

A vulnerability in the TFTP service of Cisco Network Convergence System 1000 Series software could allow an unauthenticated, remote attacker to retrieve arbitrary files from the targeted device, possibly resulting in information disclosure. The vulnerability is due to improper validation of user-supplied input within TFTP requests processed by the affected software. An attacker could exploit this vulnerability by using directory traversal techniques in malicious requests sent to the TFTP service on a targeted device. An exploit could allow the attacker to retrieve arbitrary files from the targeted device, resulting in the disclosure of sensitive information. This vulnerability affects Cisco IOS XR Software releases prior to Release 6.5.2 for Cisco Network Convergence System 1000 Series devices when the TFTP service is enabled.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.06282 93rd percentileScored 2026-11-07

Fix Fixed Cisco Network Convergence System 1000 Series (Cisco): 6.5.2

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

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco Network Convergence System 1000 Series	before 6.5.2	6.5.2	Patch available	CNA

Cisco Network Convergence System 1000 Series VendorCisco Affected before 6.5.2 Fixed in 6.5.2 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:ios_xr::::::::	before 6.5.2	Vulnerable	Cisco

cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* Versions before 6.5.2 Vulnerable ·Cisco

Remediation

Fix · CNA Cisco Network Convergence System 1000 Series (Cisco) Fixed in 6.5.2

Timeline

2026-10-02 Threatist record created from CVE-2019-1681
2026-10-03 Alias added: GHSA-6v3v-c95x-rpq9

References

Advisory 1

20190220 Cisco Network Convergence System 1000 Series TFTP Directory Traversal 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