Security readout for executives and security teams
Plain-English summary
CVE-2026-2794 is an information disclosure issue from uninitialized memory in Firefox and Firefox Focus for Android. Mozilla says it was fixed in Firefox 148. The business risk is unintended exposure of sensitive browser memory if a user interacts with malicious content, but the source bundle does not show active exploitation.
Executive priority
Prioritize remediation in normal high-severity browser patch cycles, especially for managed Android fleets. Escalate if Mozilla, CISA KEV, or threat intelligence later confirms exploitation.
Technical view
The issue is mapped to CWE-908, use of uninitialized resource. CVSS 3.1 is 7.5 with network attack vector, high attack complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality, integrity, and availability impacts. Source details do not provide exploit mechanics or affected version bounds beyond the Firefox 148 fix statement.
Likely exposure
Exposure is most relevant to Android users running Firefox or Firefox Focus before the fixed Firefox 148 release. The provided affected-version data is incomplete, so teams should verify installed mobile browser versions against Mozilla guidance.
Exploitation context
The bundle marks KEV as false and provides no cited evidence of exploitation in the wild. Treat this as a high-severity browser memory issue requiring user interaction, not as confirmed actively exploited activity.
Researcher notes
Evidence is limited to advisory metadata and references. The CVSS vector implies remote content plus user interaction, but the bundle does not provide technical reproduction details, exploit prerequisites, or exact vulnerable version ranges.
Mitigation direction
- Update Firefox and Firefox Focus for Android to Mozilla's fixed release guidance.
- Prioritize managed Android devices and high-risk users first.
- Confirm mobile app stores or MDM catalogs are serving the fixed version.
- Check Mozilla and vendor advisories for any revised affected-version guidance.
Validation and detection
- Inventory Android devices for Firefox and Firefox Focus installations.
- Compare installed versions with Mozilla's fixed Firefox 148 statement.
- Review MDM compliance data for outdated browser versions.
- Monitor vendor advisories for corrected package or version details.
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-908: 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 lookupCVE-2026-2794 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:H/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
2 official scoresWe 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:H/PR:N/UI:R/S:U/C:H/I:H/A:H1.65.9redhat-SADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N2.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/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.
- ADP timelineredhat-SADP
Made public.
- CVE publishedCVE Program
The CVE record was published.
- ADP timelineredhat-SADP
Reported to Red Hat.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2026-02-24T14:02:03.398Z: Reported to Red Hat.
- 2026-02-24T13:33:25.399Z: Made public.
Source materials
- CVE List V5 sourceCVE List V5
- https://bugzilla.mozilla.org/show_bug.cgi?id=2008365CVE reference, mozilla
- https://www.mozilla.org/security/advisories/mfsa2026-13/CVE reference, mozilla
- https://access.redhat.com/security/cve/CVE-2026-2794CVE reference, redhat-SADP · vdb-entry, x_refsource_REDHAT
- RHBZ#2442286CVE reference, redhat-SADP · issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2794.jsonCVE reference, redhat-SADP · x_sadp-csaf-vex
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 of Uninitialized Resource
Use of Uninitialized Resource represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.