CVE-2020-3358
No exploitation reported by the sources we read.
- Published2020-07-16
- Fixed in1.0.03.18
- 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 the Secure Sockets Layer (SSL) VPN feature for Cisco Small Business RV VPN Routers could allow an unauthenticated, remote attacker to cause the device to unexpectedly restart, causing a denial of service (DoS) condition. The vulnerability is due to a lack of proper input validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request over an SSL connection to the targeted device. A successful exploit could allow the attacker to cause a reload, resulting in a DoS condition.
Timeline
dates in UTC- 2020-07-1618:15CVE 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-2020-3358?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-3358?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 |
|---|---|---|---|
| 1.0 | < 1.0.03.18 | 1.0.03.18 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.0 | < 1.0.03.18 | 1.0.03.18 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.0 | < 1.0.03.18 | 1.0.03.18 | NVD |
1 more product in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Cisco rv340 dual wan gigabit vpn router firmware to 1.0.03.18
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:C/C:N/I:N/A:H
- Published
- 2020-07-16
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-3358?
Is CVE-2020-3358 actively exploited?
What is the CVSS score for CVE-2020-3358?
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