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No exploitation reported

CVE-2017-3790

No exploitation reported by the sources we read.

  • Published2017-02-01
  • WeaknessCWE-119 · CWE-20 · CWE-399

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2017-02-0119:59CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-3790?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-3790?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Cisco expressway
BranchAffectedFixed in
—= x8.1.0no fix published
—= x8.1.1no fix published
—= x8.1.2no fix published
—= x8.1_baseno fix published
—= x8.2.1no fix published
—= x8.2.2no fix published
—= x8.2_baseno fix published
—= x8.5no fix published
—= x8.5.0no fix published
—= x8.5.1no fix published
—= x8.5.2no fix published
—= x8.5.3no fix published
Cisco telepresence video communication server
BranchAffectedFixed in
—= x5.2_baseno fix published
—= x6.0_baseno fix published
—= x6.1_baseno fix published
—= x7.0.0no fix published
—= x7.0.1no fix published
—= x7.0.2no fix published
—= x7.0.3no fix published
—= x7.1_baseno fix published
—= x7.2.0no fix published
—= x7.2.1no fix published
—= x7.2.2no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVSS 3.08.6read 2026-10-23
  • NVDCVSS 2.07.8read 2026-10-23
  • CNAweakness (CWE)CWE-399read 2026-10-23
  • NVDweakness (CWE)CWE-119, CWE-20read 2026-10-23
  • FIRST EPSSEPSS score3.5 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Published
2017-02-01
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2017-3790?

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.

Is CVE-2017-3790 actively exploited?

Active exploitation of CVE-2017-3790 has not been confirmed. Its EPSS score was 3.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-3790?

CVE-2017-3790 has a CVSS v3 base score of 8.6 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

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