Security readout for executives and security teams
Plain-English summary
CVE-2026-2648 is a high-severity Chrome flaw in PDFium, Chrome’s PDF handling component. A malicious PDF could cause memory corruption and potentially let an attacker run code or compromise browser data after a user opens it. Google fixed it in Chrome 145.0.7632.109. No provided source says it is being actively exploited.
Executive priority
Treat this as a prompt browser update priority. The vulnerability has high technical impact and can be reached through a common user action, opening a PDF. It is not supported as actively exploited by the provided sources, so urgency is high but not emergency-level based on current evidence.
Technical view
The issue is a heap buffer overflow, CWE-122, in PDFium before Google Chrome 145.0.7632.109. The CVSS 3.1 score is 8.8, with network attack vector, low complexity, no privileges required, and user interaction required. The impact ratings are high for confidentiality, integrity, and availability. Triggering requires a crafted PDF file.
Likely exposure
Organizations are exposed where desktop Google Chrome installations are older than 145.0.7632.109 and users can open PDFs from email, websites, or downloads. Exposure is higher in environments without rapid browser auto-update enforcement or where Chrome’s built-in PDF viewer is commonly used.
Exploitation context
The documented attack path is a crafted PDF file processed by Chrome/PDFium. User interaction is required. The source bundle does not include public exploit details, weaponization evidence, or CISA KEV listing, so active exploitation should not be assumed.
Researcher notes
The Chromium issue link may have restricted details. Available public data identifies PDFium heap overflow and crafted PDF trigger, but not root cause, exploitability constraints, or indicators of compromise. Avoid assuming affected Chromium-based products beyond Google Chrome unless separately confirmed by their vendors.
Mitigation direction
- Update Google Chrome desktop to 145.0.7632.109 or later.
- Confirm browser auto-update is enabled and functioning across managed endpoints.
- Prioritize users who routinely handle external PDFs.
- Review Google Chrome release guidance for any additional vendor instructions.
Validation and detection
- Inventory Chrome versions across endpoints and flag versions below 145.0.7632.109.
- Verify updated endpoints report Chrome 145.0.7632.109 or later.
- Check browser management telemetry for failed or deferred updates.
- Confirm PDF handling policies align with organizational risk tolerance.
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-122: 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-2026-2648 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.
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:H2.85.9Primary CVE scoreVulnerability 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
Source materials
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.
Heap-based Buffer Overflow
Heap-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.