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CVE-2019-1752

24
FAUCET Score

CVE-2019-1752 describes a denial-of-service vulnerability in Cisco IOS and IOS XE Software's ISDN functions. This flaw allows an unauthenticated, remote attacker to trigger a device reload by sending specially crafted Q.931 information elements. With a CVSS score of 7.5 (High), this vulnerability has a low attack complexity and requires no user interaction, leading to a complete loss of availability. There is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), and there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
15.0\(1\)mCPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.0\(1\)m:*:*:*:*:*:*:*
15.0\(1\)m1CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.0\(1\)m1:*:*:*:*:*:*:*
15.0\(1\)m2CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.0\(1\)m2:*:*:*:*:*:*:*
15.0\(1\)m3CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.0\(1\)m3:*:*:*:*:*:*:*
15.0\(1\)m4CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.0\(1\)m4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.6HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.52%
Probability of exploitation in next 30 days
EPSS Percentile
83.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0252 is in the 70th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

ciscopatch availablevia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-isdn
PatchVendor Advisory
securityfocus.com / bid/107589
Third Party AdvisoryVDB Entry