How severe is CVE-2021-35109?

CVE-2021-35109 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-35109 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35109?

CVE-2021-35109 primarily affects Qualcomm Sd 8 Gen1 5g Firmware. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-35109?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-35109 published?

CVE-2021-35109 was published on 2022-09-02 and last updated on 2026-06-17.

CVE-2021-35109

CVE-2021-35109 is a medium-severity vulnerability in Qualcomm Sd 8 Gen1 5g Firmware with a CVSS 3.x base score of 6.8. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Qualcomm Sd 8 Gen1 5g Firmware
Published: 2022-09-02
Last modified: 2026-06-17

Description

Possible address manipulation from APP-NS while APP-S is configuring an RG where it tries to merge the address ranges in Snapdragon Connectivity, Snapdragon Mobile

Frequently asked questions

What is CVE-2021-35109?: Possible address manipulation from APP-NS while APP-S is configuring an RG where it tries to merge the address ranges in Snapdragon Connectivity, Snapdragon Mobile
How severe is CVE-2021-35109?: CVE-2021-35109 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-35109 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35109?: CVE-2021-35109 primarily affects Qualcomm Sd 8 Gen1 5g Firmware. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-35109?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-35109 published?: CVE-2021-35109 was published on 2022-09-02 and last updated on 2026-06-17.

References

https://www.qualcomm.com/company/product-security/bulletins/august-2022-bulletin

Affected products (15)

cpe:2.3:o:qualcomm:sd_8_gen1_5g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm7450_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8475_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8475p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcd9370_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcd9375_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcd9380_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcd9385_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn6750_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn6855_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn6856_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn7851_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wsa8830_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wsa8832_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wsa8835_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Qualcomm Sd 8 Gen1 5g Firmware

CVE-2025-27034 — Critical (CVSS 9.8): Memory corruption while selecting the PLMN from SOR failed list.
CVE-2025-21483 — Critical (CVSS 9.8): Memory corruption when the UE receives an RTP packet from the network, during the reassembly of NALUs.
CVE-2023-33045 — Critical (CVSS 9.8): Memory corruption in WLAN Firmware while parsing a NAN management frame carrying a S3 attribute.
CVE-2023-33028 — Critical (CVSS 9.8): Memory corruption in WLAN Firmware while doing a memory copy of pmk cache.
CVE-2023-28581 — Critical (CVSS 9.8): Memory corruption in WLAN Firmware while parsing receieved GTK Keys in GTK KDE.
CVE-2022-40510 — Critical (CVSS 9.8): Memory corruption due to buffer copy without checking size of input in Audio while voice call with EVS vocoder.

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