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CVE Record

CVE-2017-7750: A use-after-free vulnerability during video control operations when a "<track>" element holds a reference t...

A use-after-free vulnerability during video control operations when a "<track>" element holds a reference to an older window if that window has been replaced in the DOM. This results in a potentially exploitable crash. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2017-7750 is a Mozilla use-after-free flaw tied to video track handling. A vulnerable browser or Thunderbird version could crash in a way Mozilla described as potentially exploitable. The main business concern is legacy endpoint software, not current fully patched Mozilla releases.

Executive priority

Prioritize remediation where legacy Mozilla software remains in active use. For current, auto-updated fleets, urgency is lower, but stale enterprise images should be checked.

Technical view

The flaw occurs during video control operations when a <track> element keeps a reference to an older window after DOM replacement. Sources list affected products as Firefox before 54, Firefox ESR before 52.2, and Thunderbird before 52.2. No CVSS score or CWE is provided in the source bundle.

Likely exposure

Exposure is most likely on legacy desktops, VDI images, servers with old GUI packages, or long-lived Linux distributions carrying vulnerable Firefox, Firefox ESR, or Thunderbird builds.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation evidence. Mozilla’s wording indicates a potentially exploitable crash, so treat vulnerable browser and mail-client deployments as meaningful risk if they process untrusted web or email content.

Researcher notes

Evidence is enough to identify affected version boundaries and vulnerability class, but severity metadata is incomplete. Avoid claiming code execution or exploitation without additional source support.

Mitigation direction

  • Upgrade Firefox to 54 or later.
  • Upgrade Firefox ESR to 52.2 or later.
  • Upgrade Thunderbird to 52.2 or later.
  • Apply relevant Debian or Red Hat security updates where packaged versions are managed by the OS.
  • Check current Mozilla and distribution guidance for any environment-specific backports.

Validation and detection

  • Inventory endpoint and server versions of Firefox, Firefox ESR, and Thunderbird.
  • Confirm package versions meet Mozilla or distribution fixed-release guidance.
  • Review vulnerability scanner findings for CVE-2017-7750 on managed assets.
  • Check legacy gold images and offline systems for outdated Mozilla packages.
  • Validate that browser and mail-client update policies are enforced.
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-2017-7750 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
9Source 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
MozillaFirefoxunspecifiedListed
MozillaFirefox ESRunspecifiedListed
MozillaThunderbirdunspecifiedListed
Weakness

CWE details

No CWE listed

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