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CVE-2026-21097· NVD / CVE Program· CNA SamsungMobile

Improper authentication in ActivityTaskManagerService prior to SMR Sep-2026 Release 1 allows local privileged attackers to launch arbitrary

Noroxi assessment

Priority: Monitor (action score 18/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.12% (FIRST EPSS).
  • Someone with local access to the system can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Improper authentication in ActivityTaskManagerService prior to SMR Sep-2026 Release 1 allows local privileged attackers to launch arbitrary activity.

MediumCVSS 4.6 · v4.0—No exploit No fix recorded
Published
Sep 9, 2026
Updated
Sep 10, 2026
EPSS
0.1% · 1th percentile

Report tools

JSON

Action score

18

Monitor

Low priority for now.

CVSS
18 / 40 · 4.6 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · SamsungMobile
4.6
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-21097

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
samsungandroid

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • samsung android14.0
  • samsung android15.0
  • samsung android16.0
  • samsung android17.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (SamsungMobile). Independent of NVD's CPE analysis and usually ahead of it.

  • Samsung Mobile Samsung Mobile Devices

    • SMR Sep-2026 Release in Android 14,15,16,17 and laternot affected · semver

Same product

samsung: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-21042Out-of-bounds write in libimagecodec.quram.so prior to SMR Apr-2025 Release 1 allows remote attackers to execute arbitrary code.KEV
    79This week
  • CVE-2025-21043Out-of-bounds write in libimagecodec.quram.so prior to SMR Sep-2025 Release 1 allows remote attackers to execute arbitrary code.KEV
    70This week
  • CVE-2021-25487Lack of boundary checking of a buffer in set_skb_priv() of modem interface driver prior to SMR Oct-2021 Release 1 allows OOB read and it resKEV
    61This week

Published before and after this one in the same product

  • ← EarlierCVE-2026-21095Sep 9, 2026 · Heap-based buffer overflow in DNG decoder of libimagecodec.quram.so prior to SMR Sep-2026 Release 1 allows remote attackers to execute arbit
    36Monitor
  • ← EarlierCVE-2026-21096Sep 9, 2026 · Heap-based buffer overflow in JPEG decoder of libimagecodec.quram.so prior to SMR Sep-2026 Release 1 allows remote attackers to execute arbi
    36Monitor
  • Later →CVE-2026-21098Sep 9, 2026 · Improper access control in Link to Windows prior to SMR Sep-2026 Release 1 allows local attackers to establish a connection with the PC with
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-20936519 days apartImproper access control in HDCP trustlet prior to SMR Apr-2025 Release 1 allows local attackers with shell privilege to escalate their privi
    31Monitor
  • CVE-2023-21474371 days apartIntent redirection vulnerability in SecSettings prior to SMR Apr-2022 Release 1 allows attackers to access arbitrary file with system privil
    28Monitor
  • CVE-2023-21479371 days apartImproper authorization in Smart suggestions prior to SMR Apr-2023 Release 1 in Android 13 and 4.1.01.0 in Android 12 allows remote attackers
    21Monitor
  • CVE-2025-20962490 days apartImproper handling of insufficient permission in SpenGesture service prior to SMR May-2025 Release 1 allows local attackers to track the S Pe
    16Monitor
  • CVE-2025-20960490 days apartImproper handling of insufficient permission in CocktailBarService prior to SMR May-2025 Release 1 allows local attackers to use the privile
    13Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

  • CVE-2026-211020 days apartUse after free in DualDAR prior to SMR Sep-2026 Release 1 allows local privileged attackers to execute arbitrary code with root privilege.
    37Monitor
  • CVE-2026-211010 days apartImproper input validation in DualDAR driver prior to SMR Sep-2026 Release 1 allows local privileged attackers to potentially execute arbitra
    33Monitor
  • CVE-2026-2106830 days apartStack-based buffer overflow in libril_sem.so prior to SMR Aug-2026 Release 1 allows privileged local attackers to execute arbitrary code.
    33Monitor
  • CVE-2026-211040 days apartHeap-based buffer overflow in KnoxVault trustlet prior to SMR Sep-2026 Release 1 allows local privileged attackers to execute arbitrary code
    28Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Local
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
X

Weakness class (CWE)

CWE-285 · Improper Authorization

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records