# CVE-2026-25290: Qualcomm component memory corruption in buffer validation

Source: https://junglewise.ai/threats/cve-2026-25290-qualcomm-component-memory-corruption-in-buffer-validation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-17. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-25290 · Severity: high · CVSS 7.8 · Published 2026-09-17

A memory corruption vulnerability exists in Qualcomm components when validating large data buffers from external sources. The vulnerability stems from an incorrect buffer length check that uses addition instead of proper bounds validation. An attacker could exploit this to corrupt memory and potentially execute arbitrary code or cause denial of service.

Technologies: [Qualcomm Cologne](https://junglewise.ai/threats/technologies/cologne), [Qualcomm Cologne Firmware](https://junglewise.ai/threats/technologies/cologne-firmware), [Qualcomm Fastconnect 7800](https://junglewise.ai/threats/technologies/fastconnect-7800), [Qualcomm Fastconnect 7800 Firmware](https://junglewise.ai/threats/technologies/fastconnect-7800-firmware), [Qualcomm Snapdragon X2 Elite](https://junglewise.ai/threats/technologies/snapdragon-x2-elite), [Qualcomm Snapdragon X2 Elite Firmware](https://junglewise.ai/threats/technologies/snapdragon-x2-elite-firmware), [Qualcomm Wcd9378c](https://junglewise.ai/threats/technologies/wcd9378c), [Qualcomm Wcd9378c Firmware](https://junglewise.ai/threats/technologies/wcd9378c-firmware), [Qualcomm Wsa8840](https://junglewise.ai/threats/technologies/wsa8840), [Qualcomm Wsa8840 Firmware](https://junglewise.ai/threats/technologies/wsa8840-firmware), [Qualcomm Wsa8845](https://junglewise.ai/threats/technologies/wsa8845), [Qualcomm Wsa8845 Firmware](https://junglewise.ai/threats/technologies/wsa8845-firmware), [Qualcomm Wsa8845h](https://junglewise.ai/threats/technologies/wsa8845h), [Qualcomm Wsa8845h Firmware](https://junglewise.ai/threats/technologies/wsa8845h-firmware). Vendors: [Qualcomm](https://junglewise.ai/threats/vendors/qualcomm).

## Quick answers

**Is CVE-2026-25290 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-25290 being exploited in the wild.

**How severe is CVE-2026-25290?** High severity, with a CVSS score of 7.8, published 17 September 2026.

**Which products and versions are affected?** Qualcomm <UNKNOWN>.

**Is there a fix for CVE-2026-25290?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-25290 attacked?** It is attacked with local access, in device firmware.

**Am I affected by CVE-2026-25290?** Check whether you run Qualcomm Cologne, Qualcomm Cologne Firmware, Qualcomm Fastconnect 7800 or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a memory corruption issue (CWE-190 / integer overflow related) in buffer validation logic. The vulnerable code uses addition when performing buffer length checks, leading to an integer overflow or wraparound condition that bypasses intended bounds validation. An attacker can supply specially crafted large data buffers to trigger the flaw. The vulnerability requires the ability to send or provide data to the affected component but does not require authentication. Successful exploitation could lead to memory corruption, information disclosure, or arbitrary code execution depending on memory layout and context.

## Affected products

- Qualcomm <UNKNOWN>

## Timeline

- 2026-09-17: disclosed

## References

- [https://docs.qualcomm.com/product/publicresources/securitybulletin/september-2026-bulletin.html](https://docs.qualcomm.com/product/publicresources/securitybulletin/september-2026-bulletin.html)

## Related threats

- [Qualcomm transient denial of service while parsing frame during channel usage](https://junglewise.ai/threats/cve-2026-25294-qualcomm-transient-denial-of-service-while-parsing-frame-during)
- [Qualcomm component use-after-free information disclosure](https://junglewise.ai/threats/cve-2026-25284-qualcomm-component-use-after-free-information-disclosure)
- [Qualcomm buffer overflow in external data handling](https://junglewise.ai/threats/cve-2026-25283-qualcomm-buffer-overflow-in-external-data-handling)
- [Qualcomm component out-of-bounds memory access in data processing](https://junglewise.ai/threats/cve-2026-25282-qualcomm-component-out-of-bounds-memory-access-in-data-processing)
- [Qualcomm component memory corruption in escape handling](https://junglewise.ai/threats/cve-2026-25280-qualcomm-component-memory-corruption-in-escape-handling)