AEGLIX vulnerability intelligence
CVE-2026-20127
CRITICAL · CVSS 10.0 · Analyzed
Published: 2026-02-25 · Updated: 2026-06-17 · Source: NVD
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Source record retrieved 2026-10-28T14:20:07.068586+00:00. Scheduled imports handle updates; this page does not assert that the provider was queried just now.
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Vulnerability overview
A vulnerability in the peering authentication in 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 unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system. This vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could exploit this vulnerability by sending crafted requests to an affected system. A successful exploit could allow the attacker to log in to an affected Cisco Catalyst SD-WAN Controller as an internal, high-privileged, non-root user account. Using this account, the attacker could access NETCONF, which would then allow the attacker to manipulate network configuration for the SD-WAN fabric.
Patch review priority
Known exploitation: prioritize review
- CISA KEV lists real-world exploitation.
FIRST EPSS: 89.29% · percentile 99.8 · score date 2026-10-27.
EPSS estimates probability of exploitation in the next 30 days. It does not measure your exposure or prove exploitation. The elevated threshold is 10%; CISA KEV takes precedence. About FIRST EPSS ↗
Severity and scoring
- CVSS score
- 10.0 · CRITICAL
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-287
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Cisco · Catalyst SD-WAN Controller and Manager
- Added to catalog
- 2026-02-25
- Required action
- Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlines in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s “Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.
- CISA remediation due date
- 2026-02-27
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
Before (exclusive): 20.9.8.2
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
From (inclusive): 20.11
Before (exclusive): 20.12.5.3
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
From (inclusive): 20.13
Before (exclusive): 20.15.4.2
cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*
From (inclusive): 20.16
Before (exclusive): 20.18.2.1
cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:*:*:*:*:*:*:*:*
Before (exclusive): 20.9.8.2
cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:*:*:*:*:*:*:*:*
From (inclusive): 20.11
Before (exclusive): 20.12.5.3
cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:*:*:*:*:*:*:*:*
From (inclusive): 20.13
Before (exclusive): 20.15.4.2
cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:*:*:*:*:*:*:*:*
From (inclusive): 20.16
Before (exclusive): 20.18.2.1
cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:20.12.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:*
Before (exclusive): 20.9.8.2
cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:*
From (inclusive): 20.11
Before (exclusive): 20.12.5.3
cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:*
From (inclusive): 20.13
Before (exclusive): 20.15.4.2
cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:*
From (inclusive): 20.16
Before (exclusive): 20.18.2.1
cpe:2.3:a:cisco:sd-wan_vsmart_controller:20.12.6:*:*:*:*:*:*:*
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.