CVE-2022-33256

CVE-2022-33256 is a critical-severity vulnerability in Qualcomm Ar8035 Firmware with a CVSS 3.x base score of 9.8. 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-129.

Key facts

• Severity: Critical (CVSS 3.x base score 9.8)
• EPSS exploit prediction: 1% (41st percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-129
• Affected product: Qualcomm Ar8035 Firmware
• Published: 2023-03-10
• Last modified: 2026-06-17

Description

Memory corruption due to improper validation of array index in Multi-mode call processor.

Frequently asked questions

What is CVE-2022-33256?

Memory corruption due to improper validation of array index in Multi-mode call processor.

How severe is CVE-2022-33256?

CVE-2022-33256 has a CVSS 3.x base score of 9.8, 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 high.

Is CVE-2022-33256 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-33256?

CVE-2022-33256 primarily affects Qualcomm Ar8035 Firmware. In total, 65 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-33256?

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-2022-33256 published?

CVE-2022-33256 was published on 2023-03-10 and last updated on 2026-06-17.

References

• https://www.qualcomm.com/company/product-security/bulletins/march-2023-bulletin

Affected products (65)

• 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:qca6421_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6426_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6431_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:qcn6024_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcn9024_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_8_gen1_5g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sd480_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sd690_5g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sd695_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:sd855_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:sdx57m_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sdx65_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sdx70m_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:sdxr2_5g_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 →

Other CWE-129 (Improper Validation of Array Index) vulnerabilities

• CVE-2020-27485 — Critical (CVSS 9.9): Garmin Forerunner 235 before 8.20 is affected by: Array index error. The component is: ConnectIQ TVM. The attack vector…
• CVE-2020-27483 — Critical (CVSS 9.9): Garmin Forerunner 235 before 8.20 is affected by: Array index error. The component is: ConnectIQ TVM. The attack vector…
• CVE-2026-21413 — Critical (CVSS 9.8): A heap-based buffer overflow vulnerability exists in the lossless_jpeg_load_raw functionality of LibRaw Commit 0b56545…
• CVE-2025-27034 — Critical (CVSS 9.8): Memory corruption while selecting the PLMN from SOR failed list.
• CVE-2025-3357 — Critical (CVSS 9.8): IBM Tivoli Monitoring 6.3.0.7 through 6.3.0.7 Service Pack 19 could allow a remote attacker to execute arbitrary code…
• CVE-2024-45569 — Critical (CVSS 9.8): Memory corruption while parsing the ML IE due to invalid frame content.

Browse all CWE-129 (Improper Validation of Array Index) vulnerabilities →