Security readout for executives and security teams
Plain-English summary
CVE-2026-20994 affects Samsung Account before version 15.5.01.1. A URL redirection flaw could let a local attacker potentially obtain an access token. This is a medium-severity issue focused on confidentiality, not system takeover or service disruption based on the provided CVSS data.
Executive priority
Treat as a mobile confidentiality risk requiring timely patching, especially for corporate Samsung devices. It is not currently supported as actively exploited by the provided sources, but potential token exposure can affect account security.
Technical view
The issue is classified as CWE-601 URL Redirection. Samsung describes it as affecting Samsung Account prior to 15.5.01.1 and potentially exposing an access token to a local attacker. CVSS 4.0 score is 6.9 with local attack vector, low complexity, no privileges, no user interaction, and high vulnerable-system confidentiality impact.
Likely exposure
Exposure is primarily on Samsung devices running Samsung Account versions earlier than 15.5.01.1. Organizations with managed Samsung mobile fleets should inventory installed Samsung Account versions and prioritize devices handling sensitive accounts or enterprise access.
Exploitation context
The source bundle does not indicate active exploitation, and the CVE is not listed as KEV. The attack vector is local, which generally requires attacker presence or local access on the device. Public details do not describe exploitation steps.
Researcher notes
Key evidence is limited to the CVE record and Samsung advisory reference. The CVSS vector indicates local, low-complexity exploitation with high confidentiality impact only. No public exploit status, proof-of-concept, or detailed remediation beyond the version boundary is provided in the supplied sources.
Mitigation direction
- Update Samsung Account to version 15.5.01.1 or later where available.
- Review Samsung’s March 2026 mobile security guidance for device-specific update availability.
- Prioritize updates on managed Samsung devices with enterprise account access.
- If updates are unavailable, follow Samsung vendor guidance for compensating measures.
Validation and detection
- Inventory Samsung Account versions across managed Samsung devices.
- Confirm affected devices are not running versions prior to 15.5.01.1.
- Verify mobile device management reports show successful app or firmware updates.
- Monitor Samsung’s advisory page for revisions or additional affected-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-601: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-20994 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
- 6.9 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA: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:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N——SamsungMobileVulnerability scoring details
Base CVSS 4.0 score
6.9MediumVector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA: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://security.samsungmobile.com/serviceWeb.smsb?year=2026&month=03CVE reference, SamsungMobile
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.
URL Redirection to Untrusted Site ('Open Redirect')
URL Redirection to Untrusted Site ('Open Redirect') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.