Security readout for executives and security teams
Plain-English summary
A Windows-only Mozilla flaw could let a compromised Firefox or Thunderbird content process corrupt memory in the browser process. The business concern is sandbox escape: an attacker who already gained code execution in restricted content could potentially move into a more privileged process. Mozilla fixed it in March 2025 releases.
Executive priority
Treat as a high-priority client software update, especially for Windows fleets. It is not marked as actively exploited in the provided evidence, but sandbox escape potential makes delayed patching risky on user workstations.
Technical view
CVE-2025-1930 is a CWE-416 use-after-free in AudioIPC StreamData handling on Windows. Mozilla says bad StreamData from a compromised content process could trigger the issue in the Browser process, potentially leading to sandbox escape. CVSS 3.1 is 8.8 high with user interaction required.
Likely exposure
Exposure is most relevant to Windows systems running Firefox, Firefox ESR, Thunderbird, or Thunderbird ESR before the fixed versions: Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.
Exploitation context
The provided sources do not show known active exploitation, and the CVE is not listed as KEV in the bundle. The scenario requires a compromised content process and user interaction, but successful abuse could cross the sandbox boundary into the browser process.
Researcher notes
The public description is limited. It identifies AudioIPC StreamData, a Windows content-to-browser process boundary, and use-after-free behavior, but does not provide implementation detail or exploitability proof. Avoid assuming affected non-Windows platforms or exploitation in the wild from this bundle alone.
Mitigation direction
- Update Firefox to 136 or a later supported release.
- Update Firefox ESR to 115.21, 128.8, or later supported ESR releases.
- Update Thunderbird to 136 or 128.8, or later supported releases.
- Prioritize Windows endpoints where Mozilla clients are user-facing.
- Check Mozilla advisories for any newer vendor guidance.
Validation and detection
- Inventory Windows endpoints running Firefox, Firefox ESR, Thunderbird, or Thunderbird ESR.
- Confirm installed versions meet or exceed Mozilla’s fixed releases.
- Review endpoint management records for successful browser and mail client updates.
- Check vulnerability scanner findings against CVE-2025-1930.
- Confirm no unsupported Mozilla versions remain in production.
Public sources used
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
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-416: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-1930 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://bugzilla.mozilla.org/show_bug.cgi?id=1902309CVE reference, mozilla
- https://www.mozilla.org/security/advisories/mfsa2025-14/CVE reference, mozilla
- https://www.mozilla.org/security/advisories/mfsa2025-15/CVE reference, mozilla
- https://www.mozilla.org/security/advisories/mfsa2025-16/CVE reference, mozilla
- https://www.mozilla.org/security/advisories/mfsa2025-17/CVE reference, mozilla
- https://www.mozilla.org/security/advisories/mfsa2025-18/CVE reference, mozilla
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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.