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CVE-2020-3291

19
FAUCET Score

CVE-2020-3291 describes multiple stack overflow vulnerabilities in the web-based management interface of several Cisco Small Business RV Series Routers, including the RV320, RV325, RV016, RV042, and RV082. An authenticated, remote attacker with administrative privileges can exploit these vulnerabilities by sending crafted requests with overly large input values. This can lead to a device crash or arbitrary code execution with root privileges, earning a CVSS score of 7.2 (HIGH). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.2.3.10CPE matchmatch criteria
cpe:2.3:o:cisco:rv016_firmware:*:*:*:*:*:*:*:*
<= 4.2.3.10CPE matchmatch criteria
cpe:2.3:o:cisco:rv042_firmware:*:*:*:*:*:*:*:*
<= 4.2.3.10CPE matchmatch criteria
cpe:2.3:o:cisco:rv042g_firmware:*:*:*:*:*:*:*:*
<= 4.2.3.10CPE matchmatch criteria
cpe:2.3:o:cisco:rv082_firmware:*:*:*:*:*:*:*:*
<= 1.5.1.05CPE matchmatch criteria
cpe:2.3:o:cisco:rv320_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.2HIGH

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.19%
Probability of exploitation in next 30 days
EPSS Percentile
86.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0319 is in the 85th percentile among its peer group of 5,537 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-rv-routers-stack-vUxHmnNz
Vendor Advisory