Security readout for executives and security teams
CVE-2018-18493 is a Mozilla client-side memory safety issue in Skia. Affected Firefox, Firefox ESR, and Thunderbird versions could crash in a way Mozilla described as potentially exploitable. The issue is old and fixed in later versions, but legacy workstations or long-lived server images remain the main concern. Exposure is most likely on endpoints, VDI images, or managed Linux packages still running affected Mozilla versions. Modern, auto-updated installations should not be exposed. Distribution-specific exposure depends on whether Debian, Red Hat, Gentoo, or Ubuntu security updates were applied. Treat this as a legacy exposure cleanup item with high impact if still present. It should not displace actively exploited issues, but any affected browser or mail client on business endpoints should be updated promptly. Mitigation focus: Upgrade Firefox to 64 or later where applicable.; Upgrade Firefox ESR and Thunderbird to 60.4 or later.; Apply relevant distribution security updates from Debian, Red Hat, Gentoo, or Ubuntu..
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-2018-18493 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- 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/mfsa2018-29/CVE reference · x_refsource_CONFIRM
- [debian-lts-announce] 20181213 [SECURITY] [DLA 1605-1] firefox-esr security updateCVE reference · mailing-list, x_refsource_MLIST
- RHSA-2018:3833CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2018:3831CVE reference · vendor-advisory, x_refsource_REDHAT
- DSA-4362CVE reference · vendor-advisory, x_refsource_DEBIAN
- GLSA-201903-04CVE reference · vendor-advisory, x_refsource_GENTOO
- USN-3844-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- RHSA-2019:0159CVE reference · vendor-advisory, x_refsource_REDHAT
- https://www.mozilla.org/security/advisories/mfsa2018-31/CVE reference · x_refsource_CONFIRM
- https://www.mozilla.org/security/advisories/mfsa2018-30/CVE reference · x_refsource_CONFIRM
- DSA-4354CVE reference · vendor-advisory, x_refsource_DEBIAN
- USN-3868-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- https://bugzilla.mozilla.org/show_bug.cgi?id=1504452CVE reference · x_refsource_CONFIRM
- RHSA-2019:0160CVE 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.