How severe is CVE-2023-21655?

CVE-2023-21655 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-21655 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-2023-21655?

CVE-2023-21655 primarily affects Qualcomm Qca6391 Firmware. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-21655?

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

When was CVE-2023-21655 published?

CVE-2023-21655 was published on 2023-09-05 and last updated on 2026-06-17.

CVE-2023-21655

CVE-2023-21655 is a medium-severity vulnerability in Qualcomm Qca6391 Firmware with a CVSS 3.x base score of 6.7. 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-190.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Qualcomm Qca6391 Firmware
Published: 2023-09-05
Last modified: 2026-06-17

Description

Memory corruption in Audio while validating and mapping metadata.

Frequently asked questions

What is CVE-2023-21655?: Memory corruption in Audio while validating and mapping metadata.
How severe is CVE-2023-21655?: CVE-2023-21655 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-21655 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-2023-21655?: CVE-2023-21655 primarily affects Qualcomm Qca6391 Firmware. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-21655?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-21655 published?: CVE-2023-21655 was published on 2023-09-05 and last updated on 2026-06-17.

References

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

Affected products (31)

cpe:2.3:o:qualcomm:qca6391_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6574au_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6696_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcc5100_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa6145p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa6150p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa6155p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa8145p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa8150p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa8155p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa8195p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd_8_gen1_5g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd888_5g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sda429w_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sw5100_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sw5100p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcd9380_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcd9385_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn3610_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn3660b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn3680b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn3980_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn3988_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn6850_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn6851_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn6855_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn6856_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn7850_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcn7851_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wsa8830_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wsa8835_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Qualcomm Qca6391 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-2023-43552 — Critical (CVSS 9.8): Memory corruption while processing MBSSID beacon containing several subelement IE.
CVE-2023-33083 — Critical (CVSS 9.8): Memory corruption in WLAN Host while processing RRM beacon on the AP.
CVE-2023-33082 — Critical (CVSS 9.8): Memory corruption while sending an Assoc Request having BTM Query or BTM Response containing MBO IE.
CVE-2023-33045 — Critical (CVSS 9.8): Memory corruption in WLAN Firmware while parsing a NAN management frame carrying a S3 attribute.

All CVEs affecting Qualcomm Qca6391 Firmware →

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