Security readout for executives and security teams
Plain-English summary
A flaw in Firefox for Android could bypass a privacy protection and disclose information. The supplied CVSS assessment also indicates potentially high integrity impact. Mozilla fixed the issue in Firefox 143, making Android devices running older, unremediated releases the primary concern.
Executive priority
Treat this as a high-priority mobile browser update, especially where Android devices access sensitive business applications. Immediate emergency response is not supported by the supplied exploitation evidence, but the low-complexity, unauthenticated CVSS characteristics justify prompt fleet verification and remediation.
Technical view
CVE-2025-10535 is classified as CWE-200 in Firefox for Android’s Privacy component. Its CVSS 3.1 vector describes remote, low-complexity exploitation requiring neither privileges nor user interaction. The vector rates integrity impact high but confidentiality impact none, which conflicts with the information-disclosure title and warrants vendor-record review.
Likely exposure
Exposure is limited to Firefox for Android installations that have not received the Firefox 143 fix. The bundle does not provide a precise affected-version range or indicate that desktop Firefox is affected. Managed Android fleets and devices with delayed browser updates deserve priority review.
Exploitation context
The supplied CVSS vector indicates network reachability, low attack complexity, no required privileges, and no user interaction. However, the bundle provides no evidence of public exploitation, and the CVE is not identified as being in KEV. Exploit maturity and practical prerequisites remain unclear.
Researcher notes
The source bundle contains notable ambiguity: it lists version 143 under affected versions while stating the vulnerability was fixed in 143. It also labels the issue information disclosure despite a CVSS vector showing no confidentiality impact and high integrity impact. Researchers should rely on Mozilla’s primary records for reconciliation.
Mitigation direction
- Update Firefox for Android to version 143 or later.
- Prioritize managed Android devices with delayed or disabled application updates.
- Consult Mozilla’s advisory for any environment-specific remediation guidance.
- Restrict use of outdated Firefox installations until they can be updated.
Validation and detection
- Inventory Firefox for Android versions across managed and business-critical devices.
- Confirm installed versions are 143 or later.
- Verify application-update policies prevent Firefox from remaining on older releases.
- Review Mozilla’s advisory and Bugzilla record for clarified affected-version boundaries.
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-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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 lookupCVE-2025-10535 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
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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:N/S:U/C:N/I:H/A:N3.93.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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=1979918CVE reference, mozilla
- https://www.mozilla.org/security/advisories/mfsa2025-73/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.