CVE-2020-3375
No exploitation reported by the sources we read.
- Published2020-07-31
- Fixed in20.1.1 · 19.2.2 · 18.4.5
- WeaknessCWE-119 · CWE-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 Cisco SD-WAN Solution Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to gain access to information that they are not authorized to access, make changes to the system that they are not authorized to make, and execute commands on an affected system with privileges of the root user.
Timeline
dates in UTC- 2020-07-3100:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-3375?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-3375?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 |
|---|---|---|---|
| 20.1 | ≥ 19.3.0, < 20.1.1 | 20.1.1 | NVD |
| 19.2 | ≥ 19.2.0, < 19.2.2 | 19.2.2 | NVD |
| 18.4 | ≥ 18.4.0, < 18.4.5 | 18.4.5 | NVD |
| 18.3 | ≤ 18.3.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 16.9 | ≤ 16.9.0 | no fix published | NVD |
| 16.12 | ≥ 16.12.0, ≤ 16.12.4 | no fix published | NVD |
| 17.2 | ≥ 17.2.0, ≤ 17.2.1 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Cisco sd-wan to 20.1.1 · 19.2.2 · 18.4.5
Advisories and patches
- tools.cisco.comVendor 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:U/C:H/I:H/A:H
- Published
- 2020-07-31
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-3375?
Is CVE-2020-3375 actively exploited?
What is the CVSS score for CVE-2020-3375?
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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.