CVE-2017-3790

highpriority · track · 35EPSS 0.035 · 89 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

3.49% (89th) EPSS

CVSS 7.8 · high

Is it mine?

33 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.6

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.8highAV:N/AC:L/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 10 · impact 6.9

v3.08.6highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 4

v3.07.9highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimaryCWE-20USprimaryCWE-399US

affected products (33)

Products and version ranges known to be affected.

n/a Cisco Expressway Series Software and Cisco TelePresence VCS Software All versions prior to version X8.8.2 are vulnerable≤ Cisco Expressway Series Software and Cisco TelePresence VCS Software All versions prior to version X8.8.2 are vulnerableenisa_euvdEU
cisco expressway= x8.1.0nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.1.1nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.1.2nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.1_basenvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.2.1nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.2.2nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.2_basenvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.5nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.5.0nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.5.1nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.5.2nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.5.3nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.5_basenvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.6.0nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.6.1nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.7.0nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.7.1nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.7.2nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*
cisco expressway= x8.7.3nvdUScpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*

showing 20 of 33

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2017-02-01modified 2026-06-17

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+45278 more

references (9)

External citations — patches, advisories, analysis.

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