How severe is CVE-2021-30343?

CVE-2021-30343 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-30343 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30343?

CVE-2021-30343 primarily affects Qualcomm Ar8035 Firmware. In total, 64 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-30343?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-30343 published?

CVE-2021-30343 was published on 2022-06-14 and last updated on 2026-06-17.

CVE-2021-30343

CVE-2021-30343 is a critical-severity vulnerability in Qualcomm Ar8035 Firmware with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-367.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 7.1
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-367
Affected product: Qualcomm Ar8035 Firmware
Published: 2022-06-14
Last modified: 2026-06-17

Description

Improper integrity check can lead to race condition between tasks PDCP and RRC? after a valid RRC Command packet has been received in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile

Frequently asked questions

What is CVE-2021-30343?: Improper integrity check can lead to race condition between tasks PDCP and RRC? after a valid RRC Command packet has been received in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile
How severe is CVE-2021-30343?: CVE-2021-30343 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-30343 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30343?: CVE-2021-30343 primarily affects Qualcomm Ar8035 Firmware. In total, 64 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-30343?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-30343 published?: CVE-2021-30343 was published on 2022-06-14 and last updated on 2026-06-17.

References

https://www.qualcomm.com/company/product-security/bulletins/april-2022-bulletin

Affected products (64)

cpe:2.3:o:qualcomm:ar8035_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6390_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6391_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6426_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6436_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6574a_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6574au_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6595au_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6696_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca8081_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca8337_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcm6490_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs6490_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcx315_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa515m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd_675_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd_8_gen1_5g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd480_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd675_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd678_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd690_5g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd720g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd730_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd750g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd765_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd765g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd768g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd778g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd780g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd865_5g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd870_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd888_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd888_5g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdx55_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdx55m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdx65_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdxr2_5g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6250_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6250p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6375_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Qualcomm Ar8035 Firmware

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CVE-2024-21473 — Critical (CVSS 9.8): Memory corruption while redirecting log file to any file location with any file name.
CVE-2023-43553 — Critical (CVSS 9.8): Memory corruption while parsing beacon/probe response frame when AP sends more supported links in MLIE.
CVE-2023-43552 — Critical (CVSS 9.8): Memory corruption while processing MBSSID beacon containing several subelement IE.
CVE-2023-28582 — Critical (CVSS 9.8): Memory corruption in Data Modem while verifying hello-verify message during the DTLS handshake.

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