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CVE-2026-20245

HIGH 7.8 KNOWN EXPLOITED ALL-YEARS

Published 2026-06-04 · Last modified 2026-07-21 · cisco · NVD: Analyzed

A vulnerability in the CLI of Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by uploading a crafted file to the affected system. A successful exploit could allow the attacker to perform command injection attacks on an affected system and elevate their privileges as the root user. To exploit this vulnerability, the attacker must have netadmin privileges on the affected system. This would require valid credentials or exploitation of or . Cisco is not aware of successful exploitation by other methods. Cisco has observed limited cases where the exploitation of this bug resulted in a configuration change pushed to edge devices. Cisco recommends that customers upgrade to the fixed software that is documented in the that was published on May 14, 2026, and verify the configuration of the edge devices.

ACTIVELY EXPLOITED

Confirmed exploited in the wild — in CISA KEV since 2026-06-09. Patch or mitigate now.

Exploitation likelihood

25.3%chance of exploitation in 30 days · 98th percentile

● In CISA KEV (2026-06-09)○ Catalogued PoC◆ SSVC: exploitation active, automatable no

Impact if exploited

7.8CVSS 3.1 · HIGH · CNA

  • ConfidentialityHigh
  • IntegrityHigh
  • AvailabilityHigh

What an attacker needs

  • ⚠Access: Requires local access to the host
  • ⚠Privileges: Requires a low-privilege account
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Affected

Vendors Cisco

Products Cisco Catalyst Sd Wan Controller Cisco Catalyst Sd Wan Manager Catalyst Sd Wan Manager Sd Wan Vsmart Controller

Weakness (CWE)

  • CWE-116: Improper Encoding or Escaping of Output

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References and research data (JSON)

Unverified PoC candidates

Catalogue matches for further research. These repositories have not been validated as working exploits.

3 candidates

Additional exploitation reports

Source-specific reports, separate from CISA KEV. Repeated observations from one source are not independent confirmations.

Known Affected Software Configurations

VendorProductVersion range
CiscoCatalyst Sd Wan Manager< 20.9.9.1
CiscoCatalyst Sd Wan Manager≥ 20.10 and < 20.12.5.4
CiscoCatalyst Sd Wan Manager≥ 20.12.6 and < 20.12.6.2
CiscoCatalyst Sd Wan Manager≥ 20.13 and < 20.15.4.4
CiscoCatalyst Sd Wan Manager≥ 20.15.5 and < 20.15.5.2
CiscoCatalyst Sd Wan Manager≥ 20.16 and < 20.18.2.2
CiscoCatalyst Sd Wan Manager≥ 26.1 and < 26.1.1.1
CiscoCatalyst Sd Wan Manager20.12.7
CiscoSd Wan Vsmart Controller< 20.9.9.1
CiscoSd Wan Vsmart Controller≥ 20.10 and < 20.12.5.4
CiscoSd Wan Vsmart Controller≥ 20.12.6 and < 20.12.6.2
CiscoSd Wan Vsmart Controller≥ 20.13 and < 20.15.4.4
CiscoSd Wan Vsmart Controller≥ 20.15.5 and < 20.15.5.2
CiscoSd Wan Vsmart Controller≥ 20.16 and < 20.18.2.2
CiscoSd Wan Vsmart Controller≥ 26.1 and < 26.1.1.1
CiscoSd Wan Vsmart Controller20.12.7

All CVSS metrics

  • HIGH 7.8 v3.1 · CNA Primary
    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • HIGH 7.8 v3.1 · NVD Secondary
    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Advisories

Technical & other

Sources: NVD · CVE.org · All sources and attribution · EPSS