Security readout for executives and security teams
Plain-English summary
This flaw could let a low-privileged local user on an affected Cisco SD-WAN device read sensitive information or make unauthorized system changes. It is high severity because confidentiality and integrity impacts are both high, but the sources indicate local authenticated access is required.
Executive priority
Treat as a high-priority network infrastructure issue where Cisco SD-WAN is deployed. Urgency is highest for environments with broad local access or many low-privileged device users.
Technical view
CVE-2020-3264 is a Cisco SD-WAN Solution buffer overflow caused by insufficient input validation. The CVSS v3.0 vector is AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N, meaning local access and low privileges are required, with high confidentiality and integrity impact and no stated availability impact.
Likely exposure
Organizations running Cisco SD-WAN Solution software may be exposed. The provided bundle does not identify exact affected versions, so asset owners need to compare deployed Cisco SD-WAN software against Cisco’s advisory before deciding scope.
Exploitation context
The source bundle says exploitation requires an authenticated local attacker sending crafted traffic to an affected device. KEV status is false, and the provided sources do not state active exploitation in the wild.
Researcher notes
Evidence is sufficient for impact and attacker prerequisites, but incomplete for exact affected versions and fixes in the prompt bundle. Avoid assuming remote exploitability or public exploitation without additional vendor or KEV evidence.
Mitigation direction
- Review Cisco’s advisory for affected releases, fixed software, and workarounds.
- Inventory Cisco SD-WAN Solution deployments and record exact software versions.
- Limit local and low-privileged authenticated access to SD-WAN devices.
- Monitor for unauthorized configuration or system changes on SD-WAN devices.
Validation and detection
- Confirm whether deployed versions match Cisco’s affected release information.
- Verify local access paths and low-privileged accounts are restricted.
- Review device logs for suspicious authenticated activity or unauthorized changes.
- Confirm remediation status against Cisco’s published guidance.
Public sources used
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-119: Exact CWE lookup
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Open ATT&CK lookupCVE-2020-3264 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
- 7.1 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
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:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N1.85.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.1HighVector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20200318 Cisco SD-WAN Solution Buffer Overflow VulnerabilityCVE reference · vendor-advisory, x_refsource_CISCO
- https://github.com/orangecertcc/security-research/security/advisories/GHSA-wwq2-pxrj-v62rCVE reference · x_refsource_MISC
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 Restriction of Operations within the Bounds of a Memory Buffer
Improper Restriction of Operations within the Bounds of a Memory Buffer represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.