CVE-2020-3190 json
Cisco IOS XR Software IPsec Packet Processor Denial of Service Vulnerability
published 6y ago modified 4mo ago also EUVD-2020-24461
- cvss
- 5.8
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
A vulnerability in the IPsec packet processor of Cisco IOS XR Software could allow an unauthenticated remote attacker to cause a denial of service (DoS) condition for IPsec sessions to an affected device. The vulnerability is due to improper handling of packets by the IPsec packet processor. An attacker could exploit this vulnerability by sending malicious ICMP error messages to an affected device that get punted to the IPsec packet processor. A successful exploit could allow the attacker to deplete IPsec memory, resulting in all future IPsec packets to an affected device being dropped by the device. Manual intervention is required to recover from this situation.
Patch / fix
- cisco ios_xr 6.4.3, 6.6.3, 7.0.2, 7.1.1
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- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
1.32% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 5.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L |
| NVD | 3.1 | 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- Cisco Cisco IOS XR Software
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
- Technology feeds
References
Sources
- CVE List CVE-2020-3190
- NVD CVE-2020-3190
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