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CVE-2019-3581

25
FAUCET Score

CVE-2019-3581 describes an improper input validation vulnerability within the proxy component of McAfee Web Gateway versions 7.8.2.0 and later. This flaw allows remote attackers to trigger a denial of service by sending a specially crafted HTTP request parameter. Rated with a CVSS score of 7.5 (HIGH), it presents a network-exploitable, low-complexity attack with no user interaction required, leading to high availability impact. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 7.8.2.0, < 7.8.2.5CPE matchmatch criteria
cpe:2.3:a:mcafee:mcafee_web_gateway:*:*:*:*:*:*:*:*
>= 8.0.0.0, < 8.0.2.0CPE matchmatch criteria
cpe:2.3:a:mcafee:mcafee_web_gateway:*:*:*:*:*:*:*:*
>= 7.8.2.5, < 7.8.2.5CPE match
cpe:2.3:a:mcafee:mcafee_web_gateway:*:*:*:*:*:*:*:*
>= 8.0.2, < 8.0.2CPE match
cpe:2.3:a:mcafee:mcafee_web_gateway:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.27%
Probability of exploitation in next 30 days
EPSS Percentile
81.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0227 is in the 66th percentile among its peer group of 51,553 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

Remediation records are not available for this CVE.

References

kc.mcafee.com / corporate/index