Security readout for executives and security teams
Plain-English summary
CVE-2026-1485 is a low-severity local denial-of-service issue in GLib content type parsing. A local user would need to cause processing of a specially crafted treemagic file. Successful exploitation could crash or destabilize affected applications, but the provided sources show no confidentiality or integrity impact.
Executive priority
Treat as routine patch management, not an emergency. The issue can disrupt local applications but requires local access and user interaction. Focus on shared systems, developer workstations, and environments where users can supply content type magic data.
Technical view
GLib stores a header line length in a signed integer during content type parsing. Very large inputs can trigger integer wraparound, pointer underflow, and out-of-bounds memory access. The CVSS 3.1 score is 2.8 with local access, low complexity, low privileges, and required user interaction.
Likely exposure
Exposure is mainly Linux systems using affected Red Hat Enterprise Linux packages listed in the source bundle, including glib2 across RHEL 6, 7, 8, 9, and 10, plus related packages on some versions. Risk is local and availability-focused.
Exploitation context
The source bundle says exploitation requires a local user to install or process a specially crafted treemagic file. CISA KEV is false, and the provided sources do not claim active exploitation. No remote exploitation path is described.
Researcher notes
Evidence points to CWE-124 buffer underflow caused by signed length handling in GLib content type parsing. The provided data does not include exploit details, fixed versions, or confirmed exploitation. Validate behavior only in controlled environments and follow upstream GNOME and Red Hat issue tracking.
Mitigation direction
- Check Red Hat CVE guidance for package-specific errata or updates.
- Prioritize affected systems where untrusted local users can process custom treemagic files.
- Limit untrusted local file processing where operationally feasible.
- Apply vendor-provided updates when available through supported package channels.
Validation and detection
- Inventory RHEL systems and affected packages listed for this CVE.
- Confirm installed glib2 and related package versions against Red Hat guidance.
- Review local workflows that process user-supplied treemagic files.
- Monitor vendor advisories for fixed package availability and status changes.
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-124: 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-2026-1485 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
- Low
- CVSS
- 2.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
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:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L1.31.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
2.8LowVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://access.redhat.com/security/cve/CVE-2026-1485CVE reference · vdb-entry, x_refsource_REDHAT
- RHBZ#2433325CVE reference · issue-tracking, x_refsource_REDHAT
- https://gitlab.gnome.org/GNOME/glib/-/issues/3871CVE reference
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.
Buffer Underwrite ('Buffer Underflow')
Buffer Underwrite ('Buffer Underflow') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.