CVE-2023-28540

CVE-2023-28540 is a critical-severity vulnerability in Qualcomm 315 5g Iot Modem 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-287.

Key facts

• Severity: Critical (CVSS 3.x base score 9.1)
• EPSS exploit prediction: 0% (35th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-287
• Affected product: Qualcomm 315 5g Iot Modem Firmware
• Published: 2023-10-03
• Last modified: 2026-06-17

Description

Cryptographic issue in Data Modem due to improper authentication during TLS handshake.

Frequently asked questions

What is CVE-2023-28540?

Cryptographic issue in Data Modem due to improper authentication during TLS handshake.

How severe is CVE-2023-28540?

CVE-2023-28540 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-2023-28540 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28540?

CVE-2023-28540 primarily affects Qualcomm 315 5g Iot Modem Firmware. In total, 152 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-28540?

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-2023-28540 published?

CVE-2023-28540 was published on 2023-10-03 and last updated on 2026-06-17.

References

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

Affected products (152)

• cpe:2.3:o:qualcomm:315_5g_iot_modem_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:aqt1000_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:ar8035_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:csra6620_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:csra6640_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn3991_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn3998_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn6750_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6390_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn685x-5_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn685x-1_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn785x-1_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:wcn785x-5_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6391_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6420_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6421_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6426_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca6430_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:qca6698aq_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca8081_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qca8337_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcc710_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcm2290_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcm4290_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcm4325_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcm4490_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcm6125_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcm6490_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcm8550_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcn6024_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcn6224_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcn6274_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcn9024_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:qualcomm:qcs2290_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Qualcomm 315 5g Iot Modem Firmware

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• CVE-2023-22388 — Critical (CVSS 9.8): Memory Corruption in Multi-mode Call Processor while processing bit mask API.
• CVE-2023-28578 — Critical (CVSS 9.3): Memory corruption in Core Services while executing the command for removing a single event listener.
• CVE-2023-33072 — Critical (CVSS 9.3): Memory corruption in Core while processing control functions.
• CVE-2023-33030 — Critical (CVSS 9.3): Memory corruption in HLOS while running playready use-case.
• CVE-2022-33288 — Critical (CVSS 9.3): Memory corruption due to buffer copy without checking the size of input in Core while sending SCM command to get write…

All CVEs affecting Qualcomm 315 5g Iot Modem Firmware →

Other CWE-287 (Improper Authentication) vulnerabilities

• CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
• CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
• CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
• CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
• CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
• CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →