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NVD / CVE Program· CNA SamsungMobile

CVE-2024-20836: Out of bounds Read vulnerability in ssmis_get_frm in libsubextractor.so prior to SMR Mar-2024 Release 1 allows local attackers to read out o

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.15% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.
  • Severity is disputed: the assigning authority (CNA) scores it 3.3, NVD 5.5.

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

Out of bounds Read vulnerability in ssmis_get_frm in libsubextractor.so prior to SMR Mar-2024 Release 1 allows local attackers to read out of bounds memory.

MediumCVSS 5.5 · v3.1—No exploit No fix recorded
Published
Mar 5, 2024
Updated
Jun 17, 2026
EPSS
0.1% · 5th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 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
5.5
CNA · SamsungMobile
3.3
2.2 point gap

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A: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-2024-20836

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 android11.0
  • 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 Mar-2024 Release in Android 11, 12, 13, 14not 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
    80Now
  • 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-2024-20834Mar 5, 2024 · The sensitive information exposure vulnerability in WlanTest prior to SMR Mar-2024 Release 1 allows local attackers to access MAC address wi
    13Monitor
  • ← EarlierCVE-2024-20835Mar 5, 2024 · Improper access control vulnerability in CustomFrequencyManagerService prior to SMR Mar-2024 Release 1 allows local attackers to execute pri
    31Monitor
  • Later →CVE-2024-20833Mar 5, 2024 · Use after free vulnerability in pub_crypto_recv_msg prior to SMR Mar-2024 Release 1 due to race condition allows local attackers with system
    25Monitor

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.

No history yet (it accumulates with the daily EPSS job).

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-2023-42536119 days apartAn improper input validation in saped_dec in libsaped prior to SMR Nov-2023 Release 1 allows local attackers to cause out-of-bounds read and
    31Monitor
  • CVE-2023-42537119 days apartAn improper input validation in get_head_crc in libsaped prior to SMR Nov-2023 Release 1 allows local attackers to cause out-of-bounds read
    31Monitor
  • CVE-2023-42538119 days apartAn improper input validation in saped_rec_silence in libsaped prior to SMR Nov-2023 Release 1 allows local attackers to cause out-of-bounds
    31Monitor
  • CVE-2023-21430390 days apartAn out-of-bound read vulnerability in mapToBuffer function in libSDKRecognitionText.spensdk.samsung.so library prior to SMR JAN-2023 Release
    31Monitor
  • CVE-2025-20992456 days apartOut-of-bound read in libsecimaging.camera.samsung.so prior to SMR Feb-2025 Release 1 allows local attackers to read out-of-bounds memory.
    30Monitor
  • CVE-2024-2082029 days apartImproper input validation in bootloader prior to SMR Feb-2024 Release 1 allows local privileged attackers to cause an Out-Of-Bounds read.
    28Monitor

Chain candidates

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

—

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.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

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

nvd-primary

Attack context

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

ATT&CK techniques

—

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