How severe is CVE-2025-27034?

CVE-2025-27034 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-27034 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-27034?

CVE-2025-27034 primarily affects Qualcomm Fastconnect 6900 Firmware. In total, 113 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-27034?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-27034 have an EU (EUVD) identifier?

Yes. CVE-2025-27034 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-30994.

When was CVE-2025-27034 published?

CVE-2025-27034 was published on 2025-09-24 and last updated on 2026-06-17.

CVE-2025-27034

CVE-2025-27034 is a critical-severity vulnerability in Qualcomm Fastconnect 6900 Firmware with a CVSS 3.x base score of 9.8. 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-129.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-30994
Weakness: CWE-129
Affected product: Qualcomm Fastconnect 6900 Firmware
Published: 2025-09-24
Last modified: 2026-06-17

Description

Memory corruption while selecting the PLMN from SOR failed list.

Frequently asked questions

What is CVE-2025-27034?: Memory corruption while selecting the PLMN from SOR failed list.
How severe is CVE-2025-27034?: CVE-2025-27034 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-27034 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-27034?: CVE-2025-27034 primarily affects Qualcomm Fastconnect 6900 Firmware. In total, 113 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-27034?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-27034 have an EU (EUVD) identifier?: Yes. CVE-2025-27034 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-30994.
When was CVE-2025-27034 published?: CVE-2025-27034 was published on 2025-09-24 and last updated on 2026-06-17.

References

https://docs.qualcomm.com/product/publicresources/securitybulletin/september-2025-bulletin.html

Affected products (113)

cpe:2.3:o:qualcomm:fastconnect_6900_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:fastconnect_7800_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6174a_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6391_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6574a_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6584au_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6595au_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6696_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6698aq_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca8081_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca8337_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcc710_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcm4490_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcm5430_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcm6490_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcm8550_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcn6024_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcn6224_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcn6274_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcn9024_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs4490_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs5430_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs6490_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs8550_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qep8111_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qfw7114_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qfw7124_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:video_collaboration_vc3_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd_8_gen1_5g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdx55_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdx57m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdx61_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdx71m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdx80m_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sg8275p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm4635_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6650_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm7250p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm7325p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm7635_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Qualcomm Fastconnect 6900 Firmware

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-2024-45569 — Critical (CVSS 9.8): Memory corruption while parsing the ML IE due to invalid frame content.
CVE-2024-21473 — Critical (CVSS 9.8): Memory corruption while redirecting log file to any file location with any file name.
CVE-2023-43553 — Critical (CVSS 9.8): Memory corruption while parsing beacon/probe response frame when AP sends more supported links in MLIE.
CVE-2023-43552 — Critical (CVSS 9.8): Memory corruption while processing MBSSID beacon containing several subelement IE.
CVE-2023-28582 — Critical (CVSS 9.8): Memory corruption in Data Modem while verifying hello-verify message during the DTLS handshake.

All CVEs affecting Qualcomm Fastconnect 6900 Firmware →

Other CWE-129 (Improper Validation of Array Index) vulnerabilities

CVE-2020-27485 — Critical (CVSS 9.9): Garmin Forerunner 235 before 8.20 is affected by: Array index error. The component is: ConnectIQ TVM. The attack vector…
CVE-2020-27483 — Critical (CVSS 9.9): Garmin Forerunner 235 before 8.20 is affected by: Array index error. The component is: ConnectIQ TVM. The attack vector…
CVE-2026-21413 — Critical (CVSS 9.8): A heap-based buffer overflow vulnerability exists in the lossless_jpeg_load_raw functionality of LibRaw Commit 0b56545…
CVE-2025-3357 — Critical (CVSS 9.8): IBM Tivoli Monitoring 6.3.0.7 through 6.3.0.7 Service Pack 19 could allow a remote attacker to execute arbitrary code…
CVE-2024-45569 — Critical (CVSS 9.8): Memory corruption while parsing the ML IE due to invalid frame content.
CVE-2024-38623 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Use variable length array instead of…

Browse all CWE-129 (Improper Validation of Array Index) vulnerabilities →