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TI-2017-02888 Aliases CVE-2017-3790GHSA-4776-frm5-r3rr

Resource management flaw in Cisco Expressway Series Software and Cisco TelePresence VCS…

Priority MEDIUM 43CWE-399Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.

Summary

A vulnerability in the received packet parser of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) software could allow an unauthenticated, remote attacker to cause a reload of the affected system, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient size validation of user-supplied data. An attacker could exploit this vulnerability by sending crafted H.224 data in Real-Time Transport Protocol (RTP) packets in an H.323 call. An exploit could allow the attacker to overflow a buffer in a cache that belongs to the received packet parser, which will result in a crash of the application, resulting in a DoS condition. All versions of Cisco Expressway Series Software and Cisco TelePresence VCS Software prior to version X8.8.2 are vulnerable. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Cisco Bug IDs: CSCus99263.

Why it matters now

EPSS 0.03491 89th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Cisco Expressway Series Software and Cisco TelePresence VCS Software All versions prior to version X8.8.2 are vulnerableCisco Expressway Series Software and Cisco TelePresence VCS Software All versions prior to version X8.8.2 are vulnerable—No fix listedCNA
  • Cisco Expressway Series Software and Cisco TelePresence VCS Software All versions prior to version X8.8.2 are vulnerable Vendor— Affected Cisco Expressway Series Software and Cisco TelePresence VCS Software All versions prior to version X8.8.2 are vulnerable Fixed in — No fix listed CNA

CPE configurations NVD · 32

CPEVersionsRoleVendor
cpe:2.3:a:cisco:expressway:x8.1.0:*:*:*:*:*:*:*x8.1.0VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.1.1:*:*:*:*:*:*:*x8.1.1VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.1.2:*:*:*:*:*:*:*x8.1.2VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.1_base:*:*:*:*:*:*:*x8.1_baseVulnerableCisco
cpe:2.3:a:cisco:expressway:x8.2.1:*:*:*:*:*:*:*x8.2.1VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.2.2:*:*:*:*:*:*:*x8.2.2VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.2_base:*:*:*:*:*:*:*x8.2_baseVulnerableCisco
cpe:2.3:a:cisco:expressway:x8.5:rc4:*:*:*:*:*:*x8.5 rc4VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.5.0:*:*:*:*:*:*:*x8.5.0VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.5.1:*:*:*:*:*:*:*x8.5.1VulnerableCisco
  • cpe:2.3:a:cisco:expressway:x8.1.0:*:*:*:*:*:*:* Versions x8.1.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.1.1:*:*:*:*:*:*:* Versions x8.1.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.1.2:*:*:*:*:*:*:* Versions x8.1.2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.1_base:*:*:*:*:*:*:* Versions x8.1_base Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.2.1:*:*:*:*:*:*:* Versions x8.2.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.2.2:*:*:*:*:*:*:* Versions x8.2.2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.2_base:*:*:*:*:*:*:* Versions x8.2_base Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.5:rc4:*:*:*:*:*:* Versions x8.5 rc4 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.5.0:*:*:*:*:*:*:* Versions x8.5.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.5.1:*:*:*:*:*:*:* Versions x8.5.1 Vulnerable ·Cisco
Show 22 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:cisco:expressway:x8.5.2:*:*:*:*:*:*:*x8.5.2VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.5.3:*:*:*:*:*:*:*x8.5.3VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.5_base:*:*:*:*:*:*:*x8.5_baseVulnerableCisco
cpe:2.3:a:cisco:expressway:x8.6.0:*:*:*:*:*:*:*x8.6.0VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.6.1:*:*:*:*:*:*:*x8.6.1VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.7.0:*:*:*:*:*:*:*x8.7.0VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.7.1:*:*:*:*:*:*:*x8.7.1VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.7.2:*:*:*:*:*:*:*x8.7.2VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.7.3:*:*:*:*:*:*:*x8.7.3VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.8.0:*:*:*:*:*:*:*x8.8.0VulnerableCisco
cpe:2.3:a:cisco:expressway:x8.8.1:*:*:*:*:*:*:*x8.8.1VulnerableCisco
cpe:2.3:a:cisco:telepresence_video_communication_server:x5.2_base:*:*:*:*:*:*:*x5.2_baseVulnerableCisco
cpe:2.3:a:cisco:telepresence_video_communication_server:x6.0_base:*:*:*:*:*:*:*x6.0_baseVulnerableCisco
cpe:2.3:a:cisco:telepresence_video_communication_server:x6.1_base:*:*:*:*:*:*:*x6.1_baseVulnerableCisco
cpe:2.3:a:cisco:telepresence_video_communication_server:x7.0.0:*:*:*:*:*:*:*x7.0.0VulnerableCisco
cpe:2.3:a:cisco:telepresence_video_communication_server:x7.0.1:*:*:*:*:*:*:*x7.0.1VulnerableCisco
cpe:2.3:a:cisco:telepresence_video_communication_server:x7.0.2:*:*:*:*:*:*:*x7.0.2VulnerableCisco
cpe:2.3:a:cisco:telepresence_video_communication_server:x7.0.3:*:*:*:*:*:*:*x7.0.3VulnerableCisco
cpe:2.3:a:cisco:telepresence_video_communication_server:x7.1_base:*:*:*:*:*:*:*x7.1_baseVulnerableCisco
cpe:2.3:a:cisco:telepresence_video_communication_server:x7.2.0:*:*:*:*:*:*:*x7.2.0VulnerableCisco
cpe:2.3:a:cisco:telepresence_video_communication_server:x7.2.1:*:*:*:*:*:*:*x7.2.1VulnerableCisco
cpe:2.3:a:cisco:telepresence_video_communication_server:x7.2.2:*:*:*:*:*:*:*x7.2.2VulnerableCisco
  • cpe:2.3:a:cisco:expressway:x8.5.2:*:*:*:*:*:*:* Versions x8.5.2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.5.3:*:*:*:*:*:*:* Versions x8.5.3 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.5_base:*:*:*:*:*:*:* Versions x8.5_base Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.6.0:*:*:*:*:*:*:* Versions x8.6.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.6.1:*:*:*:*:*:*:* Versions x8.6.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.7.0:*:*:*:*:*:*:* Versions x8.7.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.7.1:*:*:*:*:*:*:* Versions x8.7.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.7.2:*:*:*:*:*:*:* Versions x8.7.2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.7.3:*:*:*:*:*:*:* Versions x8.7.3 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.8.0:*:*:*:*:*:*:* Versions x8.8.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:expressway:x8.8.1:*:*:*:*:*:*:* Versions x8.8.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:telepresence_video_communication_server:x5.2_base:*:*:*:*:*:*:* Versions x5.2_base Vulnerable ·Cisco
  • cpe:2.3:a:cisco:telepresence_video_communication_server:x6.0_base:*:*:*:*:*:*:* Versions x6.0_base Vulnerable ·Cisco
  • cpe:2.3:a:cisco:telepresence_video_communication_server:x6.1_base:*:*:*:*:*:*:* Versions x6.1_base Vulnerable ·Cisco
  • cpe:2.3:a:cisco:telepresence_video_communication_server:x7.0.0:*:*:*:*:*:*:* Versions x7.0.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:telepresence_video_communication_server:x7.0.1:*:*:*:*:*:*:* Versions x7.0.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:telepresence_video_communication_server:x7.0.2:*:*:*:*:*:*:* Versions x7.0.2 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:telepresence_video_communication_server:x7.0.3:*:*:*:*:*:*:* Versions x7.0.3 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:telepresence_video_communication_server:x7.1_base:*:*:*:*:*:*:* Versions x7.1_base Vulnerable ·Cisco
  • cpe:2.3:a:cisco:telepresence_video_communication_server:x7.2.0:*:*:*:*:*:*:* Versions x7.2.0 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:telepresence_video_communication_server:x7.2.1:*:*:*:*:*:*:* Versions x7.2.1 Vulnerable ·Cisco
  • cpe:2.3:a:cisco:telepresence_video_communication_server:x7.2.2:*:*:*:*:*:*:* Versions x7.2.2 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-3790
  2. 2026-10-03 Alias added: GHSA-4776-frm5-r3rr

References

Advisory 1

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2018-03923 Uncontrolled resource consumption in Linux Kernel CVSS 3.1HIGH 7.5
  • TI-2022-05371 Cisco Expressway Series and Cisco TelePresence Video Communication Server Vulnerabilities CVSS 3.1CRITICAL 9.0
  • TI-2024-13189 Cross-site request forgery in Cisco TelePresence Video Communication Server Expressway CVSS 3.1CRITICAL 9.6
  • TI-2024-13187 Cross-site request forgery in Cisco TelePresence Video Communication Server Expressway CVSS 3.1CRITICAL 9.6
  • TI-2022-05372 Cisco Expressway Series and Cisco TelePresence Video Communication Server Vulnerabilities CVSS 3.1CRITICAL 9.0
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences