How severe is CVE-2026-25271?

CVE-2026-25271 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-2026-25271 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-2026-25271?

CVE-2026-25271 primarily affects Qualcomm Cologne Firmware. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-25271?

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.

When was CVE-2026-25271 published?

CVE-2026-25271 was published on 2026-07-06 and last updated on 2026-07-07.

CVE-2026-25271

CVE-2026-25271 is a high-severity vulnerability in Qualcomm Cologne 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-367.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-367
Affected product: Qualcomm Cologne Firmware
Published: 2026-07-06
Last modified: 2026-07-07

Description

Memory Corruption when processing asynchronous input parameters due to improper handling of modified values between check and use.

Frequently asked questions

What is CVE-2026-25271?: Memory Corruption when processing asynchronous input parameters due to improper handling of modified values between check and use.
How severe is CVE-2026-25271?: CVE-2026-25271 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-2026-25271 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-2026-25271?: CVE-2026-25271 primarily affects Qualcomm Cologne Firmware. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-25271?: 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.
When was CVE-2026-25271 published?: CVE-2026-25271 was published on 2026-07-06 and last updated on 2026-07-07.

References

https://docs.qualcomm.com/product/publicresources/securitybulletin/july-2026-bulletin.html

Affected products (21)

cpe:2.3:o:qualcomm:cologne_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:fastconnect_6900_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:fastconnect_7800_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:iqx5121_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:iqx7181_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca0000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sc8380xp_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcd9378c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcd9380_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcd9385_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wsa8840_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wsa8845_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wsa8845h_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:x2000077_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:x2000086_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:x2000090_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:x2000092_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:x2000094_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:xg101002_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:xg101032_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:xg101039_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Qualcomm Cologne Firmware

CVE-2026-21379 — High (CVSS 7.8): Memory Corruption when allocating memory with sizes that exceed the maximum allowed value.
CVE-2026-25260 — High (CVSS 7.8): Memory Corruption when accessing shared buffers without validation of concurrent user-mode input modifications.
CVE-2026-25259 — High (CVSS 7.8): Memory corruption while processing multiple IOCTL command for escape operations.
CVE-2026-25258 — High (CVSS 7.8): Memory corruption while processing IOCTL calls for escape operations.
CVE-2025-59606 — High (CVSS 7.8): Memory Corruption when writing to invalid memory locations occurs due to heap memory exhaustion during secure data…
CVE-2025-59604 — High (CVSS 7.8): Memory Corruption when running a memory copy operation due to invalid writes caused by a null pointer.

All CVEs affecting Qualcomm Cologne Firmware →

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