Security readout for executives and security teams
Plain-English summary
An authenticated remote user could bypass authorization in Cisco SD-WAN vManage and perform actions beyond their permitted role. The stated impact includes configuration changes, sensitive information access, and unauthorized viewing. Because vManage controls SD-WAN operations, successful abuse could create material network and business risk.
Executive priority
Treat as high priority for environments using Cisco SD-WAN vManage. This is a management-plane authorization issue with potential network configuration and data exposure impact. Prioritize confirming exposure and applying Cisco guidance, especially for internet-reachable or widely accessible management interfaces.
Technical view
CVE-2021-1302 affects the web-based management interface of Cisco SD-WAN vManage Software. Cisco describes multiple authorization bypass issues allowing authenticated remote attackers to modify affected system configuration and access information. CVSS 3.1 is 8.8 with network attack vector, low complexity, low privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely where Cisco SD-WAN vManage is deployed and reachable by administrative or operator users. The bundle does not provide affected version ranges, CPEs, or fixed releases, so exposure must be confirmed against Cisco's advisory and local asset inventory.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. The vulnerability requires authentication, but a low-privileged account may be enough. Risk is higher where vManage access is broadly granted, externally reachable, or poorly monitored.
Researcher notes
The source bundle identifies CWE-20 and authorization bypass behavior but does not include detailed vulnerable versions, patch levels, proof-of-concept status, or exploit telemetry. Analysis should remain anchored to Cisco's advisory and avoid assuming exploitability beyond authenticated remote access and the stated impacts.
Mitigation direction
- Check Cisco's advisory for affected and fixed vManage releases.
- Upgrade or remediate according to Cisco's published guidance.
- Restrict vManage access to trusted administrative networks and users.
- Review role assignments and remove unnecessary vManage privileges.
- Monitor for unexpected configuration changes or sensitive data access.
Validation and detection
- Inventory all Cisco SD-WAN vManage instances and versions.
- Compare deployed versions with Cisco's advisory status.
- Verify vManage is not exposed beyond required management networks.
- Review logs for unauthorized views, configuration changes, or privilege misuse.
- Confirm administrative accounts follow least-privilege access.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-1302 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20210120 Cisco SD-WAN vManage Authorization Bypass VulnerabilitiesCVE reference · vendor-advisory, x_refsource_CISCO
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.