How severe is CVE-2024-20400?

CVE-2024-20400 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2024-20400 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-20400?

CVE-2024-20400 primarily affects Cisco Telepresence Video Communication Server. In total, 74 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-20400?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-20400 have an EU (EUVD) identifier?

Yes. CVE-2024-20400 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18115.

When was CVE-2024-20400 published?

CVE-2024-20400 was published on 2024-07-17 and last updated on 2026-06-17.

CVE-2024-20400

CVE-2024-20400 is a medium-severity vulnerability in Cisco Telepresence Video Communication Server with a CVSS 3.x base score of 4.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-601.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-18115
Weakness: CWE-601
Affected product: Cisco Telepresence Video Communication Server
Published: 2024-07-17
Last modified: 2026-06-17

Description

A vulnerability in the web-based management interface of Cisco Expressway Series could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. This vulnerability is due to improper input validation of HTTP request parameters. An attacker could exploit this vulnerability by intercepting and modifying an HTTP request from a user. A successful exploit could allow the attacker to redirect the user to a malicious web page. Note: Cisco Expressway Series refers to Cisco Expressway Control (Expressway-C) devices and Cisco Expressway Edge (Expressway-E) devices.

Frequently asked questions

What is CVE-2024-20400?: A vulnerability in the web-based management interface of Cisco Expressway Series could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. This vulnerability is due to improper input validation of HTTP request parameters. An attacker could exploit this vulnerability by intercepting and modifying an HTTP request from a user. A successful exploit could allow the attacker to redirect the user to a malicious web page. Note: Cisco Expressway Series refers to Cisco Expressway Control (Expressway-C) devices and Cisco Expressway Edge (Expressway-E) devices.
How severe is CVE-2024-20400?: CVE-2024-20400 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2024-20400 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-20400?: CVE-2024-20400 primarily affects Cisco Telepresence Video Communication Server. In total, 74 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-20400?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-20400 have an EU (EUVD) identifier?: Yes. CVE-2024-20400 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-18115.
When was CVE-2024-20400 published?: CVE-2024-20400 was published on 2024-07-17 and last updated on 2026-06-17.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-redirect-KJsFuXgj

Affected products (74)

cpe:2.3:a:cisco:telepresence_video_communication_server:x8.1:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.1.1:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.1.2:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.2:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.2.1:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.2.2:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.5:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.5.1:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.5.3:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.6:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.6.1:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.7:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.7.1:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.7.2:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.7.3:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.8:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.8.1:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.8.2:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.8.3:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.9:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.9.1:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.9.2:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.10.0:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.10.1:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.10.2:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.10.3:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.10.4:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.11.0:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.11.1:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.11.2:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.11.3:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x8.11.4:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x12.5.0:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x12.5.1:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x12.5.2:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x12.5.3:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x12.5.4:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x12.5.5:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x12.5.6:*:*:*:expressway:*:*:*
cpe:2.3:a:cisco:telepresence_video_communication_server:x12.5.7:*:*:*:expressway:*:*:*

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