CVE-2017-5374: Mozilla Firefox vulnerability

CVE-2017-5374: Memory safety bugs were reported in Firefox 50.1.

Memory safety bugs were reported in Firefox 50.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 51.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 14:55 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2017-5374 covers multiple memory safety defects in Firefox 50.1 and earlier. Mozilla reported evidence of memory corruption and presumed that some bugs could be exploited to run arbitrary code. Organizations still running Firefox below version 51 should treat this as a legacy browser risk requiring upgrade or removal. Exposure is limited to Mozilla Firefox versions earlier than 51 based on the supplied CVE data. The sources do not identify other Mozilla products, ESR branches, operating systems, or downstream packages as affected. Prioritize remediation where legacy Firefox remains on user workstations or kiosks. This is an old issue, but the business concern is unmanaged obsolete software capable of exposing users to browser-level code execution risk. Mitigation focus: Upgrade Firefox to version 51 or later per Mozilla MFSA 2017-01.; Remove or isolate Firefox versions below 51 until upgraded.; Check Mozilla advisory guidance for any environment-specific replacement details..

Prepared: Jun 7, 2026, 06:44 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2017-5374 mapping review

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jun 11, 2018, 21:00 UTC (UTC+00:00)

Official CVE source material

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.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

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://bugzilla.mozilla.org/buglist.cgi?bug_id=1325344%2C1317501%2C1311319%2C1329989%2C1300145%2C1322305%2C1288561%2C1295747%2C1318766%2C1297808%2C1321374%2C1324810%2C1313385%2C1319888%2C1302231%2C1307458%2C1293327%2C1315447%2C1319456CVE reference · x_refsource_CONFIRM
https://www.mozilla.org/security/advisories/mfsa2017-01/CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

MozillaFirefoxunspecifiedListed

Weakness

CWE details

No CWE listed

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