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CVE-2019-1876

19
FAUCET Score

CVE-2019-1876 is a medium-severity vulnerability affecting Cisco Wide Area Application Services (WAAS) Software, specifically its HTTPS proxy feature. Due to insufficient authentication, an unauthenticated, remote attacker can exploit this by sending a malicious HTTPS CONNECT message to the Central Manager. This allows the attacker to bypass corporate policies and access public internet resources. There is no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
5.5\(7\)CPE matchmatch criteria
cpe:2.3:a:cisco:wide_area_application_services:5.5\(7\):*:*:*:*:*:*:*
6.1\(1\)CPE matchmatch criteria
cpe:2.3:a:cisco:wide_area_application_services:6.1\(1\):*:*:*:*:*:*:*
6.4\(3b\)CPE matchmatch criteria
cpe:2.3:a:cisco:wide_area_application_services:6.4\(3b\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.0MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.77%
Probability of exploitation in next 30 days
EPSS Percentile
75.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0177 is in the 62nd percentile among its peer group of 23,725 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20190619-waas-authbypass
Vendor Advisory
securityfocus.com / bid/108863
Third Party AdvisoryVDB Entry