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CVE-2026-20437· NVD / CVE Program· CNA MediaTek

In MAE, there is a possible system crash due to use after free.

In MAE, there is a possible system crash due to use after free. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10431940; Issue ID: MSV-5843.

MediumCVSS 4.4 · v3.1—No exploit No fix recorded
Published
Mar 2, 2026
Updated
Jun 17, 2026
EPSS
0.1% · 0th percentile
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Report tools

JSON

Action score

17

Monitor

Low priority for now.

CVSS
17 / 40 · 4.4 / 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.

Noroxi analysis

No Noroxi analysis for this record yet

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Affected systems

VendorProduct
googleandroid
mediatekmt2718
mediatekmt6899
mediatekmt6991
mediatekmt8678
mediatekmt8793

Affected versions

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

  • google android15.0

Versions reported by the vendor

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

  • MediaTek, Inc. MediaTek chipset

    • MT2718, MT6899, MT6991, MT8678, MT8793affected

Same product

google: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-2215A use-after-free in binder.c allows an elevation of privilege from an application to the Linux Kernel.KEV
    83Now
  • CVE-2011-1823The vold volume manager daemon on Android 3.0 and 2.x before 2.3.4 trusts messages that are received from a PF_NETLINK socket, which allows KEV
    73This week
  • CVE-2015-1538Integer overflow in the SampleTable::setSampleToChunkParams function in SampleTable.cpp in libstagefright in Android before 5.1.1 LMY48I all
    70This week
  • CVE-2015-3829Off-by-one error in the MPEG4Extractor::parseChunk function in MPEG4Extractor.cpp in libstagefright in Android before 5.1.1 LMY48I allows re
    67This week
  • CVE-2015-3824The MPEG4Extractor::parseChunk function in MPEG4Extractor.cpp in libstagefright in Android before 5.1.1 LMY48I does not properly restrict si
    67This week
  • CVE-2015-3864Integer underflow in the MPEG4Extractor::parseChunk function in MPEG4Extractor.cpp in libstagefright in mediaserver in Android before 5.1.1
    66This week

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-2025-48543179 days apartIn multiple locations, there is a possible way to escape chrome sandbox to attack android system_server due to a use after free.KEV
    65This week
  • CVE-2024-47040439 days apartUse After Free in the android.hardware.radio.sap.ISap/slot2 service
    40Plan
  • CVE-2026-0163155 days apartIn multiple functions of vpu_ioctl.c, there is a possible use after free due to a use after free.
    39Monitor
  • CVE-2025-0074188 days apartIn process_service_attr_rsp of sdp_discovery.cc, there is a possible way to execute arbitrary code due to a use after free.
    39Monitor
  • CVE-2025-0075188 days apartIn process_service_search_attr_req of sdp_server.cc, there is a possible way to execute arbitrary code due to a use after free.
    39Monitor
  • CVE-2025-22403188 days apartIn sdp_snd_service_search_req of sdp_discovery.cc, there is a possible way to execute arbitrary code due to a use after free.
    39Monitor

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.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

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

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

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

nvd-secondary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

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

Vulnerable

c
free(dev->buf);/* ... another thread is still running ... */process(dev->buf);

Fixed

c
lock(&dev->lock);free(dev->buf);dev->buf = NULL;unlock(&dev->lock);

Attack context

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

MITRE has no CAPEC/ATT&CK mapping for this CWE.

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