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CVE Record

CVE-2017-5441: A use-after-free vulnerability when holding a selection during scroll events.

A use-after-free vulnerability when holding a selection during scroll events. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2017-5441 is a Mozilla use-after-free flaw triggered when a selection is held during scroll events. The public record says it can cause a potentially exploitable crash. It affects older Firefox, Firefox ESR, and Thunderbird releases, so the main business risk is legacy client software still present in endpoints or managed images.

Executive priority

Prioritize remediation if legacy Mozilla clients remain in the fleet. The issue is old, but browser and email-client memory-safety flaws can carry meaningful endpoint risk when unpatched.

Technical view

The vulnerability is a use-after-free condition in Mozilla products involving selection handling during scroll events. Affected versions are Thunderbird before 52.1, Firefox before 53, Firefox ESR before 45.9, and Firefox ESR before 52.1. The bundle provides no CVSS, CWE, or confirmed exploit details.

Likely exposure

Exposure is most likely on unmanaged or long-lived desktops, servers with GUI browsers, or legacy email clients still running the affected Mozilla versions. Current supported Mozilla releases are unlikely to be exposed based on the stated fixed-version thresholds.

Exploitation context

The source bundle states a potentially exploitable crash but does not cite active exploitation. The CVE is not marked in KEV. Treat exploit status as unconfirmed unless vendor or threat-intelligence sources provide newer evidence.

Researcher notes

Evidence is limited to the CVE description and referenced vendor advisories. No CVSS, CWE, exploitability rating, or active exploitation signal is provided in the bundle. Avoid assuming remote code execution without confirming Mozilla advisory details.

Mitigation direction

  • Upgrade Thunderbird to 52.1 or later, or a current supported release.
  • Upgrade Firefox to 53 or later, or a current supported release.
  • Upgrade Firefox ESR beyond the affected ESR branch thresholds.
  • Apply Red Hat or Debian security updates where Mozilla packages are distro-managed.
  • Check Mozilla advisories for product-specific fixed releases and applicability.

Validation and detection

  • Inventory Firefox, Firefox ESR, and Thunderbird versions across endpoints.
  • Flag any Thunderbird version earlier than 52.1.
  • Flag Firefox versions earlier than 53.
  • Flag Firefox ESR versions earlier than 45.9 or 52.1, depending branch.
  • Confirm distro-managed packages include the relevant Red Hat or Debian advisory fixes.
Prepared
Confidence
medium
Sources
10

Public sources used

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

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2017-5441 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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
10Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
MozillaThunderbirdunspecifiedListed
MozillaFirefox ESRunspecified, unspecifiedListed
MozillaFirefoxunspecifiedListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.