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CVE-2021-1981· NVD / CVE Program· CNA qualcomm

Possible buffer over read due to improper IE size check of Bearer capability IE in MT setup request from network in Snapdragon Auto, Snapdra

Possible buffer over read due to improper IE size check of Bearer capability IE in MT setup request from network in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile

CriticalCVSS 9.1 · v3.1—No exploit No fix recorded
Published
Nov 12, 2021
Updated
Jun 16, 2026
EPSS
0.6% · 47th percentile
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Action score

36

Monitor

Low priority for now.

CVSS
36 / 40 · 9.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

CNA vs NVD score

NVD
9.1
CNA · qualcomm
7.5
1.6 point gap

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

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

Affected systems

VendorProduct
qualcommapq8017 firmware
qualcommapq8017
qualcommar8035 firmware
qualcommar8035
qualcommmsm8917 firmware
qualcommmsm8917
qualcommqca6390 firmware
qualcommqca6390
qualcommqca6391 firmware
qualcommqca6391
qualcommqca6421 firmware
qualcommqca6421

and 168 more

Affected versions

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

  • qualcomm apq8017 firmwareall versions
  • qualcomm ar8035 firmwareall versions
  • qualcomm msm8917 firmwareall versions
  • qualcomm qca6390 firmwareall versions
  • qualcomm qca6391 firmwareall versions
  • qualcomm qca6421 firmwareall versions
  • qualcomm qca6426 firmwareall versions
  • qualcomm qca6431 firmwareall versions
  • qualcomm qca6436 firmwareall versions
  • qualcomm qca6574a firmwareall versions
  • qualcomm qca6574au firmwareall versions
  • qualcomm qca6595au firmwareall versions
  • qualcomm qca6696 firmwareall versions
  • qualcomm qca8081 firmwareall versions
  • qualcomm qca8337 firmwareall versions
  • qualcomm qcm6125 firmwareall versions
  • qualcomm qcm6490 firmwareall versions
  • qualcomm qcs410 firmwareall versions
  • qualcomm qcs610 firmwareall versions
  • qualcomm qcs6125 firmwareall versions

Versions reported by the vendor

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

  • Qualcomm, Inc. Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile

    • APQ8017, AR8035, MSM8917, QCA6390, QCA6391, QCA6421, QCA6426, QCA6431, QCA6436, QCA6574A, QCA6574AU, QCA6595AU, QCA6696, QCA8081, QCA8337, QCM6125, QCM6490, QCS410, QCS610, QCS6125, QCS6490, QCX315, Qaffected

Same product

qualcomm: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-21483Improper Restriction of Operations within the Bounds of a Memory Buffer in Data Network Stack & Connectivity
    39Monitor
  • CVE-2022-25686Memory corruption in video module due to buffer overflow while processing WAV file in Snapdragon Auto, Snapdragon Compute, Snapdragon Connec
    39Monitor
  • CVE-2022-25657Memory corruption due to buffer overflow occurs while processing invalid MKV clip which has invalid seek header in Snapdragon Auto, Snapdrag
    39Monitor
  • CVE-2021-1946Null Pointer Dereference may occur due to improper validation while processing crafted SDP body in Snapdragon Auto, Snapdragon Compute, Snap
    39Monitor
  • CVE-2021-1933UE assertion is possible due to improper validation of invite message with SDP body in Snapdragon Auto, Snapdragon Compute, Snapdragon Conne
    39Monitor
  • CVE-2020-11291Possible buffer overflow while updating ikev2 parameters for delete payloads received during informational exchange due to lack of check of
    39Monitor

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.

No nightly-computed relations.

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

  • Anyone who can reach it over the internet can trigger it.
  • 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
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

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

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

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

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