The IP ingress packet handler on Cisco Aironet 1800 devices with software 8.1(112.3) and 8.1(112.4) allows remote attackers to cause a denial of service via a crafted header in an IP packet, aka Bug ID CSCuv63138.
CVE-2015-6320
HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-17. NVD baseline CVSS 7.5; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.9%CVSS: 7.5Exploit: None knownExposed services: Not assessed
No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.
- CVSS v3
- 7.5
- EG Score
- 7.5HIGHmedium confidence
- EG Risk
- 39EG Risk 39/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation2% × 40%Automatability30% × 15%CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix. - EPSS PROB
- 1.9%
- EPSS %ILE
- 79th
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).
No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
January 15, 2016
Last Modified
June 17, 2026
References (4)
- psirt@ciscohttp://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160113-aironet
- psirt@ciscohttp://www.securitytracker.com/id/1034668
- af854a3a-2127-422b-91ae-364da2661108http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160113-aironet
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1034668
Vendor Advisories for CVE-2015-6320
Vendor advisories for this CVE are temporarily unavailable — the list could not be loaded just now. That is not a sign that none exist; please retry shortly.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Related CVEs
Related CVEs are temporarily unavailable — the same-product, same-vendor and same-CWE lists could not be loaded just now. That is not a sign that none exist; please retry shortly.
Frequently asked(5)
What is CVE-2015-6320?
CVE-2015-6320 is a high vulnerability published on January 15, 2016. The IP ingress packet handler on Cisco Aironet 1800 devices with software 8.1(112.3) and 8.1(112.4) allows remote attackers to cause a denial of service via a crafted header in an IP packet, aka Bug ID CSCuv63138.
When was CVE-2015-6320 disclosed?
CVE-2015-6320 was first published on January 15, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-6320 actively exploited?
CVE-2015-6320 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.9% probability of exploitation in the next 30 days (79th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2015-6320?
CVE-2015-6320 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2015-6320?
No fix for CVE-2015-6320 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2015-6320
Is Your Infrastructure Affected by CVE-2015-6320?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.