Qualcomm Snapdragon x55 5g Modem-Rf Firmware vulnerabilities

52 CVEs affecting Qualcomm Snapdragon x55 5g Modem-Rf Firmware, 1 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2025-47404, published 2026-05-04.

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Highest priority

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

• CVE-2024-43047: Qualcomm Multiple Chipsets Use-After-Free Vulnerability, published 2024-10-07. High severity, CVSS 7.8. Actively exploited: in CISA KEV since 2024-10-08. EPSS: 0.7% chance of exploitation in the next 30 days. Memory corruption while maintaining memory maps of HLOS memory.
• CVE-2024-21477, published 2024-05-06. High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days. Transient DOS while parsing a protected 802.11az Fine Time Measurement (FTM) frame.
• CVE-2023-43529, published 2024-05-06. High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days. Transient DOS while processing IKEv2 Informational request messages, when a malformed fragment packet is received.
• CVE-2023-33101, published 2024-04-01. High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days. Transient DOS while processing DL NAS TRANSPORT message with payload length 0.
• CVE-2023-33099, published 2024-04-01. High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days. Transient DOS while processing SMS container of non-standard size received in DL NAS transport in NR.
• CVE-2023-33104, published 2024-03-04. High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days. Transient DOS while processing PDU Release command with a parameter PDU ID out of range.
• CVE-2023-33096, published 2024-03-04. High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days. Transient DOS while processing DL NAS Transport message, as specified in 3GPP 24.501 v16.
• CVE-2023-33095, published 2024-03-04. High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days. Transient DOS while processing multiple payload container type with incorrect container length received in DL NAS transport OTA in NR.
• CVE-2023-33086, published 2024-03-04. High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days. Transient DOS while processing multiple IKEV2 Informational Request to device from IPSEC server with different identifiers.
• CVE-2024-49838, published 2025-02-03. High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days. Information disclosure while parsing the OCI IE with invalid length.

Latest

• CVE-2025-47404, published 2026-05-04. High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days. Memory corruption when dynamically changing the size of a previously allocated buffer while its contents are being modified.
• CVE-2025-27042, published 2025-07-08. High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days. Memory corruption while processing video packets received from video firmware.
• 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-2025-21446, published 2025-07-08. High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days. Transient DOS may occur when processing vendor-specific information elements while parsing a WLAN frame for BTM requests.
• CVE-2025-21433, published 2025-07-08. Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days. Transient DOS when importing a PKCS#8-encoded RSA private key with a zero-sized modulus.
• CVE-2025-21432, published 2025-07-08. High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days. Memory corruption while retrieving the CBOR data from TA.
• CVE-2025-21427, published 2025-07-08. High severity, CVSS 8.2. EPSS: 0.2% chance of exploitation in the next 30 days. Information disclosure while decoding this RTP packet Payload when UE receives the RTP packet from the network.
• CVE-2025-21422, published 2025-07-08. High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days. Cryptographic issue while processing crypto API calls, missing checks may lead to corrupted key usage or IV reuses.
• CVE-2024-53009, published 2025-07-08. High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days. Memory corruption while operating the mailbox in Automotive.