What is CVE-2021-1473?

CVE-2021-1473 is a medium-severity vulnerability in Cisco Small Business Rv Series Router Firmware, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2021-04-08.

How severe is CVE-2021-1473?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2021-1473 known to be exploited?

9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Cisco Small Business Rv Series Router Firmware

CVE-2021-1473

Multiple vulnerabilities exist in the web-based management interface of Cisco Small Business RV Series Routers. A remote attacker could execute arbitrary commands or bypass authentication and upload files on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Vulnerability class: Buffer Overflow

EPSS: 0.642 (99.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
psirt@cisco.com (mailing-list, x_refsource_FULLDISC, Mailing List, Third Party Advisory)
psirt@cisco.com (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-1473?: CVE-2021-1473 is a medium-severity vulnerability in Cisco Small Business Rv Series Router Firmware, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2021-04-08.
How severe is CVE-2021-1473?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2021-1473 known to be exploited?: 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.