Security readout for executives and security teams
This Firefox issue could let a malicious or untrusted PAC proxy configuration redirect browser requests meant for localhost to another server. That matters because many developer, admin, and security tools expose local-only services. The risk depends on proxy auto-detection or local PAC use being enabled. Exposure is most likely on endpoints running Firefox below 65 where WPAD/proxy auto-detection or PAC file loading is enabled, especially developer or administrator workstations with localhost-bound services accessed through the browser. Treat as a targeted endpoint hardening issue, not an emergency. Prioritize remediation where legacy Firefox, automatic proxy discovery, and sensitive localhost tools overlap. Mitigation focus: Upgrade Firefox to version 65 or later, or the vendor-fixed package.; Disable proxy auto-detection and PAC loading where not operationally required.; Prefer managed, trusted proxy configuration for enterprise endpoints..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2018-18506 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
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- Known Exploited
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- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.mozilla.org/security/advisories/mfsa2019-01/CVE reference · x_refsource_CONFIRM
- USN-3874-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- RHSA-2019:0623CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2019:0622CVE reference · vendor-advisory, x_refsource_REDHAT
- 20190320 [SECURITY] [DSA 4411-1] firefox-esr security updateCVE reference · mailing-list, x_refsource_BUGTRAQ
- DSA-4411CVE reference · vendor-advisory, x_refsource_DEBIAN
- [debian-lts-announce] 20190321 [SECURITY] [DLA 1722-1] firefox-esr security updateCVE reference · mailing-list, x_refsource_MLIST
- RHSA-2019:0680CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2019:0681CVE reference · vendor-advisory, x_refsource_REDHAT
- USN-3927-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- DSA-4420CVE reference · vendor-advisory, x_refsource_DEBIAN
- 20190401 [SECURITY] [DSA 4420-1] thunderbird security updateCVE reference · mailing-list, x_refsource_BUGTRAQ
- [debian-lts-announce] 20190401 [SECURITY] [DLA 1743-1] thunderbird security updateCVE reference · mailing-list, x_refsource_MLIST
- GLSA-201904-07CVE reference · vendor-advisory, x_refsource_GENTOO
- RHSA-2019:0966CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2019:1144CVE reference · vendor-advisory, x_refsource_REDHAT
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.