Security readout for executives and security teams
Plain-English summary
CVE-2026-20973 is a Samsung Mobile memory-read flaw in libimagecodec.quram.so. Before Samsung’s January 2026 SMR Release 1, a remote attacker could read memory outside the intended bounds. The published impact is limited to confidentiality, with no stated integrity or availability impact.
Executive priority
Moderate priority. The flaw is remotely reachable and needs no user interaction, but the published impact is limited to memory disclosure and there is no cited evidence of active exploitation. Organizations with Samsung mobile fleets should include it in normal-to-accelerated mobile patch cycles.
Technical view
Samsung describes an out-of-bounds read, CWE-125, in libimagecodec.quram.so before SMR Jan-2026 Release 1. CVSS 3.1 is 5.3: network attack vector, low complexity, no privileges, no user interaction, unchanged scope, low confidentiality impact, no integrity or availability impact.
Likely exposure
Exposure is most relevant to Samsung Mobile devices running affected Android 13, 14, 15, or 16 builds that have not received the January 2026 SMR Release 1 update. The sources do not identify specific models, regions, carrier builds, or triggering content types.
Exploitation context
The CVSS vector indicates remote, unauthenticated exploitation with no user interaction, but public sources provided do not report active exploitation, proof-of-concept availability, or inclusion in CISA KEV. Treat as a patch-priority issue for managed Samsung fleets, especially where sensitive data exposure is a concern.
Researcher notes
Available public detail is limited to Samsung’s bulletin and CVE metadata. The sources do not specify affected parsers, file formats, attack preconditions beyond CVSS, exploitability details, or model coverage. Avoid assuming broader Android or non-Samsung exposure without vendor confirmation.
Mitigation direction
- Apply Samsung Mobile SMR Jan-2026 Release 1 where available.
- Prioritize managed Samsung devices on Android 13, 14, 15, and 16.
- Check Samsung’s advisory for model-specific update availability.
- Use mobile device management to enforce current security patch levels.
Validation and detection
- Inventory Samsung Mobile devices and Android versions.
- Confirm each device shows the January 2026 SMR Release 1 or later.
- Review Samsung’s January 2026 security bulletin for applicability.
- Track exceptions where carrier or model updates are delayed.
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-125: 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-2026-20973 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
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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.
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:L/I:N/A:N3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=01CVE 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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.