NVD / CVE Program· CNA qualcomm

CVE-2021-30301: Possible denial of service due to out of memory while processing RRC and NAS OTA message in Snapdragon Auto, Snapdragon Industrial IOT…

Noroxi assessment

Priority: Monitor (action score 30/100)

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: 0.58% (FIRST EPSS).
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.
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

Possible denial of service due to out of memory while processing RRC and NAS OTA message in Snapdragon Auto, Snapdragon Industrial IOT, Snapdragon Mobile

HighCVSS 7.5 · v3.1—No exploit No fix recorded

Published: Jan 13, 2022
Updated: Jun 16, 2026
EPSS: 0.5% · 48th percentile
CWE: CWE-400

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 30 / 40 · 7.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.5%

CNA vs NVD score

NVD: 7.5
CNA · qualcomm: 7.5; agree

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.

Is your version affected? Check it

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.

We use this product, ask for help

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
qualcomm	ar8035 firmware	cpe:2.3:o:qualcomm:ar8035_firmware
qualcomm	ar8035	cpe:2.3:h:qualcomm:ar8035
qualcomm	qca6390 firmware	cpe:2.3:o:qualcomm:qca6390_firmware
qualcomm	qca6390	cpe:2.3:h:qualcomm:qca6390
qualcomm	qca6391 firmware	cpe:2.3:o:qualcomm:qca6391_firmware
qualcomm	qca6391	cpe:2.3:h:qualcomm:qca6391
qualcomm	qca6574a firmware	cpe:2.3:o:qualcomm:qca6574a_firmware
qualcomm	qca6574a	cpe:2.3:h:qualcomm:qca6574a
qualcomm	qca6595au firmware	cpe:2.3:o:qualcomm:qca6595au_firmware
qualcomm	qca6595au	cpe:2.3:h:qualcomm:qca6595au
qualcomm	qca6696 firmware	cpe:2.3:o:qualcomm:qca6696_firmware
qualcomm	qca6696	cpe:2.3:h:qualcomm:qca6696

and 88 more

Affected versions

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

qualcomm ar8035 firmwareall versions
qualcomm qca6390 firmwareall versions
qualcomm qca6391 firmwareall versions
qualcomm qca6574a firmwareall versions
qualcomm qca6595au firmwareall versions
qualcomm qca6696 firmwareall versions
qualcomm qca8081 firmwareall versions
qualcomm qca8337 firmwareall versions
qualcomm qcx315 firmwareall versions
qualcomm sa515m firmwareall versions
qualcomm sd 675 firmwareall versions
qualcomm sd 8 gen1 5g firmwareall versions
qualcomm sd480 firmwareall versions
qualcomm sd675 firmwareall versions
qualcomm sd678 firmwareall versions
qualcomm sd690 5g firmwareall versions
qualcomm sd720g firmwareall versions
qualcomm sd730 firmwareall versions
qualcomm sd765 firmwareall versions
qualcomm sd765g 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 Industrial IOT, Snapdragon Mobile
- AR8035, QCA6390, QCA6391, QCA6574A, QCA6595AU, QCA6696, QCA8081, QCA8337, QCX315, SA515M, SD 675, SD 8 Gen1 5G, SD480, SD675, SD678, SD690 5G, SD720G, SD730, SD765, SD765G, SD768G, SD865 5G, SD870, SDaffected

Same product

qualcomm: all records

Other highest-scoring records for the same primary product.

CVE-2023-33106Use of Out-of-range Pointer Offset in GraphicsKEV
61This week
CVE-2024-49839Buffer Over-read in WLAN Host Cmn
39Monitor
CVE-2024-45569Improper Validation of Array Index in WLAN Host Communication
39Monitor

Published before and after this one in the same product

← EarlierCVE-2021-30279Jan 3, 2022 · Possible access control violation while setting current permission for VMIDs due to improper permission masking in Snapdragon Compute…
31Monitor
← EarlierCVE-2021-30287Jan 13, 2022 · Possible assertion due to improper validation of symbols configured for PDCCH monitoring in Snapdragon Auto, Snapdragon Compute, Snapdragon…
30Monitor
Later →CVE-2021-30307Jan 13, 2022 · Possible denial of service due to improper validation of DNS response when DNS client requests with PTR, NAPTR or SRV query type in…
30Monitor

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.

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: none
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: None
Integrity impact: None
Availability impact: High

Weakness class (CWE)

CWE-400 · Uncontrolled Resource Consumption

CVSS vector

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

nvd-primary

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

The bug in code

The whole CWE-400 class

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

Vulnerable

1function expand(node) {
2  return node.children.map(expand);
3}

Fixed

1const MAX_DEPTH = 32;
2function expand(node, depth = 0) {
3  if (depth > MAX_DEPTH) throw new Error("too deep");
4  return node.children.map((c) => expand(c, depth + 1));
5}

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

Endpoint Denial of ServiceT1499

Change log

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

References

www.qualcomm.com/company/product-security/bulletins/january-2022-bulletin

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

All records