CVE-2024-20393Network attack vector

Guest-to-admin escalation via sensitive information disclosure

Published Oct 2, 2024 · Updated Oct 2, 2024

Improper authorization in Cisco RV340, RV340W, RV345, and RV345P router firmware allows remote authenticated users to gain administrator access. The web-based management interface exposes sensitive information in response to crafted HTTP input, letting a guest account elevate to administrator. A valid guest session is required, and WAN exploitation also requires remote management, which is disabled by default; the LAN interface remains available.

CVSS severity8.8
High
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Cisco RV340, RV340W, RV345, and RV345P router firmware allows remote authenticated users to gain administrator access. The web-based management interface exposes sensitive information in response to crafted HTTP input, letting a guest account elevate to administrator. A valid guest session is required, and WAN exploitation also requires remote management, which is disabled by default; the LAN interface remains available.

The record

CVE
CVE-2024-20393
Published
Oct 2, 2024
Updated
Oct 2, 2024
Vendor
ClamAV
Product
Cisco Small Business RV Series Router Firmware
Classifications
CWE-285, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.00.29
  2. Affected versionversion=1.0.00.33
  3. Affected versionversion=1.0.01.16
  4. Affected versionversion=1.0.01.17
  5. Affected versionversion=1.0.01.18
  6. Affected versionversion=1.0.01.20
  7. Affected versionversion=1.0.02.16
  8. Affected versionversion=1.0.03.15
  9. Affected versionversion=1.0.03.16
  10. Affected versionversion=1.0.03.17
  11. Affected versionversion=1.0.03.18
  12. Affected versionversion=1.0.03.19
  13. Affected versionversion=1.0.03.20
  14. Affected versionversion=1.0.03.21
  15. Affected versionversion=1.0.03.22
  16. Affected versionversion=1.0.03.24
  17. Affected versionversion=1.0.03.26
  18. Affected versionversion=1.0.03.27
  19. Affected versionversion=1.0.03.28
  20. Affected versionversion=1.0.03.29

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ClamAV · Cisco Small Business RV Series Router Firmwareversion=1.0.00.29; version=1.0.00.33; version=1.0.01.16; version=1.0.01.17; version=1.0.01.18; version=1.0.01.20; version=1.0.02.16; version=1.0.03.15; version=1.0.03.16; version=1.0.03.17; version=1.0.03.18; version=1.0.03.19; version=1.0.03.20; version=1.0.03.21; version=1.0.03.22; version=1.0.03.24; version=1.0.03.26; version=1.0.03.27; version=1.0.03.28; version=1.0.03.29

Published CVSS scores

8.8Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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