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CVE-2021-1198

20
FAUCET Score

CVE-2021-1198 describes multiple input validation vulnerabilities in the web-based management interface of several Cisco Small Business RV series routers, including the RV110W, RV130, RV130W, and RV215W. An authenticated, remote attacker could exploit these flaws by sending crafted HTTP requests. Successful exploitation could lead to arbitrary code execution as root or a denial of service (DoS) condition due to unexpected device restarts. The vulnerability has a CVSS score of 7.2 (High), indicating a significant risk. While requiring valid administrator credentials, the attack can be performed remotely over the network with low complexity. The potential impact includes complete system compromise (arbitrary code execution) or service disruption. Currently, there is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. The CVE has received minimal community discussion and media coverage, suggesting it is not widely known or actively targeted. Cisco has not released software updates to address these vulnerabilities.

Impacted Technologies

VendorProductVersion(s)CPE
1.2.2.8CPE matchmatch criteria
cpe:2.3:o:cisco:rv110w_firmware:1.2.2.8:*:*:*:*:*:*:*
1.3.1.7CPE matchmatch criteria
cpe:2.3:o:cisco:rv110w_firmware:1.3.1.7:*:*:*:*:*:*:*
1.2.2.8CPE matchmatch criteria
cpe:2.3:o:cisco:rv130_vpn_router_firmware:1.2.2.8:*:*:*:*:*:*:*
1.3.1.7CPE matchmatch criteria
cpe:2.3:o:cisco:rv130_vpn_router_firmware:1.3.1.7:*:*:*:*:*:*:*
1.2.2.8CPE matchmatch criteria
cpe:2.3:o:cisco:rv130w_firmware:1.2.2.8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
2.19%
Probability of exploitation in next 30 days
EPSS Percentile
80.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0219 is in the 76th percentile among its peer group of 5,538 CVEs.

Social Chatter

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-overflow-WUnUgv4U
Vendor Advisory