CVE-2018-6677
CVE-2018-6677 is a critical-severity vulnerability in Mcafee Mcafee Web Gateway with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- CVSS v2: 9.0
- EPSS exploit prediction: 2% (81st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-22
- Affected product: Mcafee Mcafee Web Gateway
- Published:
- Last modified:
Description
Directory Traversal vulnerability in the administrative user interface in McAfee Web Gateway (MWG) MWG 7.8.1.x allows authenticated administrator users to gain elevated privileges via unspecified vectors.
Frequently asked questions
- What is CVE-2018-6677?
- Directory Traversal vulnerability in the administrative user interface in McAfee Web Gateway (MWG) MWG 7.8.1.x allows authenticated administrator users to gain elevated privileges via unspecified vectors.
- How severe is CVE-2018-6677?
- CVE-2018-6677 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-6677 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-6677?
- CVE-2018-6677 affects Mcafee Mcafee Web Gateway. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-6677?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2018-6677 published?
- CVE-2018-6677 was published on 2018-07-23 and last updated on 2026-06-17.
References
- http://www.securityfocus.com/bid/104893
- https://kc.mcafee.com/corporate/index?page=content&id=SB10245
Affected products (1)
- cpe:2.3:a:mcafee:mcafee_web_gateway:7.8.1.0:*:*:*:*:*:*:*
More vulnerabilities in Mcafee Mcafee Web Gateway
- CVE-2018-6667 — Critical (CVSS 10.0): Authentication Bypass vulnerability in the administrative user interface in McAfee Web Gateway 7.8.1.0 through 7.8.1.5…
- CVE-2018-6678 — Critical (CVSS 9.1): Configuration/Environment manipulation vulnerability in the administrative interface in McAfee Web Gateway (MWG) MWG…
- CVE-2019-3581 — High (CVSS 7.5): Improper input validation in the proxy component of McAfee Web Gateway 7.8.2.0 and later allows remote attackers to…
All CVEs affecting Mcafee Mcafee Web Gateway →
Other CWE-22 (Path Traversal) vulnerabilities
- CVE-2026-76606 — Critical (CVSS 10.0): Joomla Extension - fabrikar.com - Path Traversal via image element in Fabrik < 4.7.3 - ???.
- CVE-2026-18051 — Critical (CVSS 10.0): The W3 Total Cache WordPress plugin before 2.10.5 does not properly validate the request path it uses to build cache…
- CVE-2026-74764 — Critical (CVSS 10.0): Pandora contains a path traversal vulnerability in its TAR archive extraction functionality. When processing a…
- CVE-2026-16940 — Critical (CVSS 10.0): The Custom Fields WordPress plugin before 1.5.1 does not validate a user-supplied file path before deletion, allowing…
- CVE-2026-67429 — Critical (CVSS 10.0): Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.6, image.download and related…
- CVE-2026-59555 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Deletion in Participants Database <= 2.7.8.3 versions.