CVE-2021-30339

CVE-2021-30339 is a critical-severity vulnerability in Qualcomm Ar8035 Firmware with a CVSS 3.x base score of 9.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: Critical (CVSS 3.x base score 9.0)
• CVSS v2: 4.9
• EPSS exploit prediction: 0% (6th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Qualcomm Ar8035 Firmware
• Published: 2022-06-14
• Last modified: 2026-06-17

Description

Reading PRNG output may lead to improper key generation due to lack of buffer validation in Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking

Frequently asked questions

What is CVE-2021-30339?

Reading PRNG output may lead to improper key generation due to lack of buffer validation in Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking

How severe is CVE-2021-30339?

CVE-2021-30339 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-30339 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30339?

CVE-2021-30339 primarily affects Qualcomm Ar8035 Firmware. In total, 55 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-30339?

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-2021-30339 published?

CVE-2021-30339 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 (55)

• cpe:2.3:o:qualcomm:ar8035_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6391_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca8081_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca8337_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca9984_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcm2290_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcm4290_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcm6490_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcs2290_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcs405_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcs4290_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcs6490_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sd_8_gen1_5g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sd460_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sd480_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sd662_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sd680_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sd690_5g_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:sd888_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sd888_5g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sdx57m_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sdx65_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sm6375_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sm7250p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sm7315_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sm7325p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sw5100_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sw5100p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcd9370_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcd9375_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcd9380_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcd9385_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn3910_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn3950_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Qualcomm Ar8035 Firmware

• CVE-2025-27034 — Critical (CVSS 9.8): Memory corruption while selecting the PLMN from SOR failed list.
• CVE-2024-45569 — Critical (CVSS 9.8): Memory corruption while parsing the ML IE due to invalid frame content.
• 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.

All CVEs affecting Qualcomm Ar8035 Firmware →