CVE-2020-3228
No exploitation reported by the sources we read.
- Published2020-06-03
- WeaknessCWE-20
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A vulnerability in Security Group Tag Exchange Protocol (SXP) in Cisco IOS Software, Cisco IOS XE Software, and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because crafted SXP packets are mishandled. An attacker could exploit this vulnerability by sending specifically crafted SXP packets to the affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
Timeline
dates in UTC- 2020-06-0318:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-3228?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-3228?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 12.2 | = 12.2\(6\)i1 | no fix published | NVD |
| 15.1 | = 15.1\(1\)sy | no fix published | NVD |
| 15.1 | = 15.1\(1\)sy1 | no fix published | NVD |
| 15.1 | = 15.1\(1\)sy2 | no fix published | NVD |
| 15.1 | = 15.1\(1\)sy3 | no fix published | NVD |
| 15.1 | = 15.1\(1\)sy4 | no fix published | NVD |
| 15.1 | = 15.1\(1\)sy5 | no fix published | NVD |
| 15.1 | = 15.1\(1\)sy6 | no fix published | NVD |
| 15.1 | = 15.1\(2\)sy | no fix published | NVD |
| 15.1 | = 15.1\(2\)sy1 | no fix published | NVD |
| 15.1 | = 15.1\(2\)sy2 | no fix published | NVD |
| 15.1 | = 15.1\(2\)sy3 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 3.3 | = 3.3.0se | no fix published | NVD |
| 3.3 | = 3.3.0xo | no fix published | NVD |
| 3.3 | = 3.3.1se | no fix published | NVD |
| 3.3 | = 3.3.1xo | no fix published | NVD |
| 3.3 | = 3.3.2se | no fix published | NVD |
| 3.3 | = 3.3.2xo | no fix published | NVD |
| 3.3 | = 3.3.3se | no fix published | NVD |
| 3.3 | = 3.3.4se | no fix published | NVD |
| 3.3 | = 3.3.5se | no fix published | NVD |
| 3.5 | = 3.5.0e | no fix published | NVD |
| 3.5 | = 3.5.1e | no fix published | NVD |
| 3.5 | = 3.5.2e | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 5.2 | = 5.2\(1\)sv3\(3.1\) | no fix published | NVD |
| 5.2 | = 5.2\(1\)sv3\(3.15\) | no fix published | NVD |
| 5.2 | = 5.2\(1\)sv3\(4.1\) | no fix published | NVD |
| 5.2 | = 5.2\(1\)sv3\(4.1a\) | no fix published | NVD |
| 5.2 | = 5.2\(1\)sv3\(4.1b\) | no fix published | NVD |
| 5.2 | = 5.2\(1\)sv5\(1.1\) | no fix published | NVD |
| 5.2 | = 5.2\(1\)sv5\(1.2\) | no fix published | NVD |
| 5.2 | = 5.2\(1\)sv5\(1.3\) | no fix published | NVD |
| 8.0 | = 8.0\(1\) | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
Advisories and patches
- tools.cisco.comPatch · Vendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Published
- 2020-06-03
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-3228?
Is CVE-2020-3228 actively exploited?
What is the CVSS score for CVE-2020-3228?
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