Multiple Cisco networking products allow remote attackers to cause a denial of service on the local network via a series of ARP packets sent to the router's interface that contains a different MAC address for the router, which eventually causes the router to overwrite the MAC address in its ARP table.
Conclusion & alert: CVE-2001-0895 is rated Moderate Risk (48/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.35%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 2.89% | 2.35% | -0.54% |
| 2 | 2026-01-23 | 1.67% | 2.89% | +1.23% |
| 3 | 2025-05-28 | — | 1.67% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| cisco | catalyst_2900xl | — | cpe:2.3:h:cisco:catalyst_2900xl:*:*:*:*:*:*:*:* |
| cisco | catalyst_2948g-l3 | — | cpe:2.3:h:cisco:catalyst_2948g-l3:*:*:*:*:*:*:*:* |
| cisco | catalyst_2950 | — | cpe:2.3:h:cisco:catalyst_2950:*:*:*:*:*:*:*:* |
| cisco | catalyst_3500xl | — | cpe:2.3:h:cisco:catalyst_3500xl:*:*:*:*:*:*:*:* |
| cisco | catalyst_3550 | — | cpe:2.3:h:cisco:catalyst_3550:*:*:*:*:*:*:*:* |
| cisco | catalyst_4000 | — | cpe:2.3:h:cisco:catalyst_4000:*:*:*:*:*:*:*:* |
| cisco | catalyst_4908g-l3 | — | cpe:2.3:h:cisco:catalyst_4908g-l3:*:*:*:*:*:*:*:* |
| cisco | catalyst_5000 | — | cpe:2.3:h:cisco:catalyst_5000:*:*:*:*:*:*:*:* |
| cisco | catalyst_6000 | — | cpe:2.3:h:cisco:catalyst_6000:*:*:*:*:*:*:*:* |
| cisco | catalyst_8500 | — | cpe:2.3:h:cisco:catalyst_8500:*:*:*:*:*:*:*:* |
| cisco | distributed_director | — | cpe:2.3:h:cisco:distributed_director:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.cisco.com/warp/public/707/IOS-arp-overwrite-vuln-pub.shtml | Patch Vendor Advisory |
| http://www.kb.cert.org/vuls/id/399355 | US Government Resource |
| http://www.osvdb.org/807 | |
| http://www.securityfocus.com/bid/3547 | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/7547 |