CVE-2017-5432

CRITICALNVD 9.89.8—

9.8

A use-after-free vulnerability occurs during certain text input selection resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 86.5%
KEV: Not listed

Published

June 11, 2018

Last Modified

November 25, 2025

Advisory Details (10)

Auto-updated Jun 10, 2026

Patch available. Sources: redhat.

generic

Security vulnerabilities fixed in Firefox ESR 52.1 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2017-12/

generic

Security vulnerabilities fixed in Firefox ESR 45.9 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2017-11/

generic

Security vulnerabilities fixed in Firefox 53 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2017-10/

generic

[SECURITY] [DSA 3831-1] firefox-esr security update

https://www.debian.org/security/2017/dsa-3831

generic

1346654 - (CVE-2017-5432) heap-use-after-free in nsFrameSelection::MoveCaret

https://bugzilla.mozilla.org/show_bug.cgi?id=1346654

redhat Patch Available

Affected: Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2017:1201

redhat Patch Available

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2017:1106

redhat Patch Available

Affected: Red Hat Enterprise Linux 6.

https://access.redhat.com/errata/RHSA-2017:1104

generic

http://www.securitytracker.com/id/1038320

generic

http://www.securityfocus.com/bid/97940

Patch Availability(5)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	thunderbird (1:52.1.1+build1-0ubuntu0.17.04.1) @ zesty	2026-05-28	ubuntu
ubuntu	firefox (53.0+build6-0ubuntu0.17.04.1) @ zesty	2026-05-28	ubuntu
redhat	thunderbird-0:52.1.0-1.el7_3	2017-05-08	redhat
redhat	firefox-0:52.1.0-2.el7_3	2017-04-21	redhat
redhat	firefox-0:52.1.0-2.el6_9	2017-04-20	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-416Use After Free

All Vendor Advisories

(5)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 8× in last 7d / 39× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-16 17:50 UTCEPSS rescore
2026-06-16 17:50 UTCEPSS rescore
2026-06-15 18:13 UTCOSV refresh
2026-06-15 17:45 UTCEPSS rescore
2026-06-14 23:14 UTCEPSS rescore
2026-06-13 22:57 UTCEPSS rescore
2026-06-12 23:09 UTCEPSS rescore
2026-06-10 22:15 UTCEPSS rescore
2026-06-10 13:19 UTCEPSS rescore
2026-06-08 14:14 UTCEPSS rescore
2026-06-08 14:14 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore

Show 14 more

2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 06:56 UTCEG score recompute
2026-05-28 06:56 UTCVendor advisory
2026-05-28 06:55 UTCGHSA enrichment
2026-05-27 13:38 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-26 13:42 UTCEPSS rescore
2026-05-26 13:42 UTCEPSS rescore
2026-05-26 07:17 UTCEPSS rescore
2026-05-26 07:17 UTCEPSS rescore
2026-05-23 08:01 UTCOSV refresh

Frequently asked(5)

What is CVE-2017-5432?

CVE-2017-5432 is a critical vulnerability published on June 11, 2018. A use-after-free vulnerability occurs during certain text input selection resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

When was CVE-2017-5432 disclosed?

CVE-2017-5432 was first published in the National Vulnerability Database on June 11, 2018, with the most recent update on November 25, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2017-5432 actively exploited?

CVE-2017-5432 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 86.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2017-5432?

CVE-2017-5432 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2017-5432?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-5432, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2017-5432

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CVE-2017-5432

Published

Last Modified

Advisory Details (10)

Security vulnerabilities fixed in Firefox ESR 52.1 — Mozilla

Security vulnerabilities fixed in Firefox ESR 45.9 — Mozilla

Security vulnerabilities fixed in Firefox 53 — Mozilla

[SECURITY] [DSA 3831-1] firefox-esr security update

1346654 - (CVE-2017-5432) heap-use-after-free in nsFrameSelection::MoveCaret

Patch Availability(5)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2017-5432?

Same vendor

Same CWE

CVE-2017-5432

📅 Published

🔄 Last Modified

📋 Advisory Details (10)

Security vulnerabilities fixed in Firefox ESR 52.1 — Mozilla

Security vulnerabilities fixed in Firefox ESR 45.9 — Mozilla

Security vulnerabilities fixed in Firefox 53 — Mozilla

[SECURITY] [DSA 3831-1] firefox-esr security update

1346654 - (CVE-2017-5432) heap-use-after-free in nsFrameSelection::MoveCaret

Patch Availability(5)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2017-5432?

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Published

Last Modified

Advisory Details (10)

Frequently asked(5)

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