Qualcomm Snapdragon x20 Lte Modem Firmware vulnerabilities

34 CVEs affecting Qualcomm Snapdragon x20 Lte Modem Firmware, 1 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2025-21482, published 2025-09-24.

More from Qualcomm.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

• CVE-2023-33107: Qualcomm Multiple Chipsets Integer Overflow Vulnerability, published 2023-12-05. High severity, CVSS 7.8. Actively exploited: in CISA KEV since 2023-12-05. EPSS: 0.7% chance of exploitation in the next 30 days. Memory corruption in Graphics Linux while assigning shared virtual memory region during IOCTL call.
• CVE-2023-22385, published 2023-10-03. Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days. Memory Corruption in Data Modem while making a MO call or MT VOLTE call.
• CVE-2022-40503, published 2023-04-13. High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days. Information disclosure due to buffer over-read in Bluetooth Host while A2DP streaming.
• CVE-2023-24847, published 2023-10-03. High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days. Transient DOS in Modem while allocating DSM items.
• CVE-2022-40504, published 2023-05-02. High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days. Transient DOS due to reachable assertion in Modem when UE received Downlink Data Indication message from the network.
• CVE-2023-24849, published 2023-10-03. High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days. Information Disclosure in data Modem while parsing an FMTP line in an SDP message.
• CVE-2023-24848, published 2023-10-03. High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days. Information Disclosure in Data Modem while performing a VoLTE call with an undefined RTCP FB line value.
• CVE-2022-40521, published 2023-06-06. High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days. Transient DOS due to improper authorization in Modem
• CVE-2023-22388, published 2023-11-07. Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days. Memory Corruption in Multi-mode Call Processor while processing bit mask API.
• CVE-2023-33080, published 2023-12-05. High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days. Transient DOS while parsing a vender specific IE (Information Element) of reassociation response management frame.

Latest

• CVE-2025-21482, published 2025-09-24. High severity, CVSS 7.1. EPSS: 0.1% chance of exploitation in the next 30 days. Cryptographic issue while performing RSA PKCS padding decoding.
• CVE-2025-21454, published 2025-07-08. High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days. Transient DOS while processing received beacon frame.
• CVE-2025-21449, published 2025-07-08. High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days. Transient DOS may occur while processing malformed length field in SSID IEs.
• CVE-2024-33056, published 2024-12-02. High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days. Memory corruption when allocating and accessing an entry in an SMEM partition continuously.
• CVE-2024-38423, published 2024-11-04. High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days. Memory corruption while processing GPU page table switch.
• CVE-2024-38422, published 2024-11-04. High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days. Memory corruption while processing voice packet with arbitrary data received from ADSP.
• CVE-2024-33016, published 2024-09-02. Medium severity, CVSS 6.8. EPSS: 0.2% chance of exploitation in the next 30 days. memory corruption when an invalid firehose patch command is invoked.
• CVE-2024-21471, published 2024-05-06. High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days. Memory corruption when IOMMU unmap of a GPU buffer fails in Linux.
• CVE-2024-21468, published 2024-04-01. High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days. Memory corruption when there is failed unmap operation in GPU.
• CVE-2023-33066, published 2024-03-04. High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days. Memory corruption in Audio while processing RT proxy port register driver.