Security readout for executives and security teams
Plain-English summary
CVE-2020-3260 can let someone within wireless adjacency of affected Cisco Aironet access points crash the AP by overwhelming vulnerable client packet handling. The business impact is wireless outage, not data theft. Critical sites using affected Aironet APs should verify exposure and follow Cisco guidance.
Executive priority
Treat this as a high-priority availability risk for locations dependent on Cisco Aironet wireless access. It is not described as data compromise, but a successful attack can disrupt business operations by crashing access points.
Technical view
Cisco Aironet Access Point Software improperly processes sustained client packets. An unauthenticated adjacent attacker can trigger an AP crash and denial of service. CVSS v3.0 is 7.4 high, with adjacent attack vector, low complexity, no privileges, no user interaction, and high availability impact.
Likely exposure
Exposure is limited to affected Cisco Aironet access points reachable by an adjacent attacker, typically someone within relevant wireless range. The provided bundle does not identify exact vulnerable versions, so inventory must be compared with Cisco's advisory.
Exploitation context
The bundle does not show CISA KEV listing or any cited active exploitation evidence. Exploitation requires adjacency and sustained malicious client packets, with the observed result described as AP crash and denial of service.
Researcher notes
Affected version detail is not present in the provided bundle. Research should stay anchored to Cisco's advisory for affected releases, fixed software, and operational workarounds. Do not claim active exploitation without KEV or another cited source.
Mitigation direction
- Review Cisco advisory for fixed releases or recommended mitigations before changing production APs.
- Inventory Cisco Aironet APs and prioritize critical or high-density wireless locations.
- Apply vendor-approved software updates or mitigations where Cisco identifies affected deployments.
- Monitor AP availability, crash, and reboot alerts during remediation.
- Restrict untrusted physical proximity to sensitive wireless environments where feasible.
Validation and detection
- Identify all Cisco Aironet access points and their running software versions.
- Compare inventory against Cisco advisory affected product guidance.
- Check monitoring for unexpected AP crashes, reloads, or client outage patterns.
- Confirm remediated APs remain stable after vendor-approved updates or configuration changes.
- Document unresolved devices and compensating controls for risk tracking.
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-399: 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 lookupCVE-2020-3260 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
- 7.4 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/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:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H2.84Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.4HighVector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20200415 Cisco Aironet Series Access Points Client Packet Processing Denial of Service VulnerabilityCVE 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.
Resource Management Errors
Resource Management Errors represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.