How severe is CVE-2025-21481?

CVE-2025-21481 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-21481 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-21481?

CVE-2025-21481 primarily affects Qualcomm 315 5g Iot Modem Firmware. In total, 249 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-21481?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-21481 have an EU (EUVD) identifier?

Yes. CVE-2025-21481 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31003.

When was CVE-2025-21481 published?

CVE-2025-21481 was published on 2025-09-24 and last updated on 2026-06-17.

CVE-2025-21481

CVE-2025-21481 is a high-severity vulnerability in Qualcomm 315 5g Iot Modem Firmware with a CVSS 3.x base score of 7.8. 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-31003
Weakness: CWE-120
Affected product: Qualcomm 315 5g Iot Modem Firmware
Published: 2025-09-24
Last modified: 2026-06-17

Description

Memory corruption while performing private key encryption in trusted application.

Frequently asked questions

What is CVE-2025-21481?: Memory corruption while performing private key encryption in trusted application.
How severe is CVE-2025-21481?: CVE-2025-21481 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-21481 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-21481?: CVE-2025-21481 primarily affects Qualcomm 315 5g Iot Modem Firmware. In total, 249 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-21481?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-21481 have an EU (EUVD) identifier?: Yes. CVE-2025-21481 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31003.
When was CVE-2025-21481 published?: CVE-2025-21481 was published on 2025-09-24 and last updated on 2026-06-17.

References

https://docs.qualcomm.com/product/publicresources/securitybulletin/september-2025-bulletin.html

Affected products (249)

cpe:2.3:o:qualcomm:315_5g_iot_modem_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:aqt1000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:ar8031_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:ar8035_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:c-v2x_9150_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6250p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6370_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6650_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:sm7635_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm7675_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm7675p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8635_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8635p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8650q_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8735_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8750_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8750p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:smart_audio_400_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_4_gen_1_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_460_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_480_5g_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_480\+_5g_mobile_platform_\(sm4350-ac\)_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_662_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_665_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_670_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_675_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_678_mobile_platform_\(sm6150-ac\)_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_680_4g_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_685_4g_mobile_platform_\(sm6225-ad\)_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_690_5g_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_695_5g_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_710_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_720g_mobile_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_730_mobile_platform_\(sm7150-aa\)_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_730g_mobile_platform_\(sm7150-ab\)_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_732g_mobile_platform_\(sm7150-ac\)_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_750g_5g_mobile_platform_firmware:-:*:*:*:*:*:*:*

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