CVE-2024-20865· NVD / CVE Program· CNA SamsungMobile

Authentication bypass in bootloader prior to SMR May-2024 Release 1 allows physical attackers to flash arbitrary images.

Noroxi assessment

Priority: Monitor (action score 27/100)

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: 0.31% (FIRST EPSS).
Physical access to the device is required. No account or password is 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

MediumCVSS 6.8 · v3.1—No exploit No fix recorded

Auth bypass

BDU:2024-08824

Published: May 7, 2024
Updated: Jun 17, 2026
EPSS: 0.3% · 23th percentile
CWE: CWE-287

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 27 / 40 · 6.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.3%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 6.8
CNA · SamsungMobile: 6.6; 0.2 point gap

CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

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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.

Vendor	Product	CPE
samsung	android	cpe:2.3:o:samsung:android

Affected versions

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

samsung android12.0
samsung android13.0
samsung android14.0

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 May-2024 Release in Selected Android 12, 13, 14 MediaTek devicesnot affected

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-2024-20863May 7, 2024 · Out of bounds write vulnerability in SNAP in HAL prior to SMR May-2024 Release 1 allows local privileged attackers to execute arbitrary code
26Monitor
← EarlierCVE-2024-20864May 7, 2024 · Improper access control vulnerability in DarManagerService prior to SMR May-2024 Release 1 allows local attackers to monitor system resource
22Monitor
Later →CVE-2024-20866May 7, 2024 · Authentication bypass vulnerability in Setupwizard prior to SMR May-2024 Release 1 allows physical attackers to skip activation step.
26Monitor

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-2024-2089056 days apartImproper input validation in BLE prior to SMR Jul-2024 Release 1 allows adjacent attackers to trigger abnormal behavior.
35Monitor
CVE-2023-21484369 days apartImproper access control vulnerability in AppLock prior to SMR May-2023 Release 1 allows local attackers without proper permission to execute
31Monitor
CVE-2023-21468484 days apartImproper access control vulnerability in Telephony prior to SMR Apr-2023 Release 1 allows attackers to access files with escalated permissio
31Monitor
CVE-2023-30708244 days apartImproper authentication in SecSettings prior to SMR Sep-2023 Release 1 allows attacker to access Captive Portal Wi-Fi in Reactivation Lock s
30Monitor
CVE-2023-42531182 days apartImproper access control vulnerability in SmsController prior to SMR Nov-2023 Release1 allows local attackers to bypass restrictions on start
28Monitor
CVE-2024-2081692 days apartImproper authentication vulnerability in onCharacteristicWriteRequest in Auto Hotspot prior to SMR Feb-2024 Release 1 allows adjacent attack
26Monitor

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-2024-2087728 days apartHeap out-of-bound write vulnerability in parsing grid image header in libsavscmn.so prior to SMR Jun-2024 Release 1 allows local attackers t
31Monitor
CVE-2024-208620 days apartOut-of-bounds write in SveService prior to SMR May-2024 Release 1 allows local privileged attackers to execute arbitrary code.
26Monitor
CVE-2024-208630 days apartOut of bounds write vulnerability in SNAP in HAL prior to SMR May-2024 Release 1 allows local privileged attackers to execute arbitrary code
26Monitor
CVE-2024-2088128 days apartImproper input validation vulnerability in chnactiv TA prior to SMR Jun-2024 Release 1 allows local privileged attackers lead to potential a
26Monitor

Bug bounty scope

No known public program.

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

Technical details

Attack conditions

Physical access to the device is required.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Physical
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-287 · Improper Authentication

CVSS vector

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.

The bug in code

The whole CWE-287 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1app.use("/admin", requireSession, adminRouter);
2

3// Route added later skips the middleware
4app.post("/admin-api/config", updateConfig);

Fixed

1const admin = express.Router();
2admin.use(requireSession, requireRole("admin"));
3

4admin.post("/config", updateConfig);
5app.use("/admin", admin);

Attack context

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

Attack patterns (CAPEC)

ATT&CK techniques

Change log

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

References

security.samsungmobile.com/securityUpdate.smsb?year=2024&month=05

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

All records