How severe is CVE-2026-25281?

CVE-2026-25281 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-25281 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-2026-25281?

CVE-2026-25281 primarily affects Qualcomm Cologne Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-25281?

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-2026-25281 published?

CVE-2026-25281 was published on 2026-09-17 and last updated on 2026-09-22.

CVE-2026-25281

CVE-2026-25281 is a high-severity vulnerability in Qualcomm Cologne Firmware with a CVSS 3.x base score of 7.4. 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-770.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Qualcomm Cologne Firmware
Published: 2026-09-17
Last modified: 2026-09-22

Description

Transient DOS when processing large or numerous request buffers without sufficient memory allocation validation.

Frequently asked questions

What is CVE-2026-25281?: Transient DOS when processing large or numerous request buffers without sufficient memory allocation validation.
How severe is CVE-2026-25281?: CVE-2026-25281 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-25281 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-2026-25281?: CVE-2026-25281 primarily affects Qualcomm Cologne Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-25281?: 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-2026-25281 published?: CVE-2026-25281 was published on 2026-09-17 and last updated on 2026-09-22.

References

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

Affected products (7)

cpe:2.3:o:qualcomm:cologne_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:fastconnect_7800_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:snapdragon_x2_elite_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wcd9378c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wsa8840_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wsa8845_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:wsa8845h_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Qualcomm Cologne Firmware

CVE-2026-25289 — Critical (CVSS 9.6): Memory Corruption when processing Device Capability Extended attributes in certain NAN Service Discovery Frames with…
CVE-2026-25283 — High (CVSS 8.8): Memory Corruption when copying unverified data from an external source exceeds the allocated buffer size.
CVE-2026-25282 — High (CVSS 7.9): Transient DOS when processing unverified data from a neighboring system causes out of bound memory access.
CVE-2026-25290 — High (CVSS 7.8): Memory Corruption when validating large data buffers from external sources using addition to check buffer length.
CVE-2026-25280 — High (CVSS 7.8): Memory corruption when processing escape handling flow with insufficient user buffer sizes.
CVE-2026-24075 — High (CVSS 7.8): Memory Corruption when multiple threads issue concurrent IOCTL requests to the device control handler due to improper…

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