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Fencer Vulns
medium 5.5

CVE-2021-1546 json

Cisco SD-WAN Software Information Disclosure Vulnerability

published 2021-09-23 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-7013

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

Summary

A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to access sensitive information. This vulnerability is due to improper protections on file access through the CLI. An attacker could exploit this vulnerability by running a CLI command that targets an arbitrary file on the local system. A successful exploit could allow the attacker to return portions of an arbitrary file, possibly resulting in the disclosure of sensitive information.

Patch / fix

  • cisco catalyst_sd-wan_manager 20.4.2, 20.6.1
  • cisco sd-wan_vbond_orchestrator 20.4.2, 20.5.2, 20.6.1
  • cisco sd-wan_vmanage 20.5.2
  • cisco vsmart_controller_firmware 20.4.2, 20.5.2, 20.6.1
  • cisco vedge_100_firmware 20.4.2, 20.5.2, 20.6.1
  • cisco vedge_1000_firmware 20.4.2, 20.5.2, 20.6.1
  • cisco vedge_100b_firmware 20.4.2, 20.5.2, 20.6.1
  • cisco vedge_100m_firmware 20.4.2, 20.5.2, 20.6.1
  • cisco vedge_100wm_firmware 20.4.2, 20.5.2, 20.6.1
  • cisco vedge_2000_firmware 20.4.2, 20.5.2, 20.6.1
  • cisco vedge_5000_firmware 20.4.2, 20.5.2, 20.6.1
  • cisco vedge_cloud_firmware 20.4.2, 20.5.2, 20.6.1

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • Cisco Cisco SD-WAN Solution

Classification

Weakness
  • CWE-209 Generation of Error Message Containing Sensitive Information

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.