How severe is CVE-2025-21488?

CVE-2025-21488 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability low.

Is CVE-2025-21488 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-21488?

CVE-2025-21488 primarily affects Qualcomm Fastconnect 6200 Firmware. In total, 108 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-21488?

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.

Does CVE-2025-21488 have an EU (EUVD) identifier?

Yes. CVE-2025-21488 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-30998.

When was CVE-2025-21488 published?

CVE-2025-21488 was published on 2025-09-24 and last updated on 2026-06-17.

CVE-2025-21488

CVE-2025-21488 is a high-severity vulnerability in Qualcomm Fastconnect 6200 Firmware with a CVSS 3.x base score of 8.2. 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-126.

Key facts

Severity: High (CVSS 3.x base score 8.2)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-30998
Weakness: CWE-126
Affected product: Qualcomm Fastconnect 6200 Firmware
Published: 2025-09-24
Last modified: 2026-06-17

Description

Information disclosure while decoding this RTP packet headers received by UE from the network when the padding bit is set.

Frequently asked questions

What is CVE-2025-21488?: Information disclosure while decoding this RTP packet headers received by UE from the network when the padding bit is set.
How severe is CVE-2025-21488?: CVE-2025-21488 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability low.
Is CVE-2025-21488 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-21488?: CVE-2025-21488 primarily affects Qualcomm Fastconnect 6200 Firmware. In total, 108 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-21488?: 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.
Does CVE-2025-21488 have an EU (EUVD) identifier?: Yes. CVE-2025-21488 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-30998.
When was CVE-2025-21488 published?: CVE-2025-21488 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 (108)

cpe:2.3:o:qualcomm:fastconnect_6200_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:fastconnect_6700_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:fastconnect_6900_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:fastconnect_7800_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:msm8996au_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6564_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6564a_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6564au_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6574_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6574a_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6574au_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6595au_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qca6696_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcm4490_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs410_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs4490_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qcs610_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:qmp1000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:video_collaboration_vc1_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:video_collaboration_vc3_platform_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa6145p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa6155_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa6155p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa8155_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sa8155p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd_8_gen1_5g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd660_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd670_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sd865_5g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sdm429w_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sg4150p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm4125_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm4635_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6370_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm6650_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm7635_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm7675_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm7675p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8550p_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:qualcomm:sm8635_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Qualcomm Fastconnect 6200 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-2023-22388 — Critical (CVSS 9.8): Memory Corruption in Multi-mode Call Processor while processing bit mask API.
CVE-2023-24855 — Critical (CVSS 9.8): Memory corruption in Modem while processing security related configuration before AS Security Exchange.
CVE-2023-28562 — Critical (CVSS 9.8): Memory corruption while handling payloads from remote ESL.
CVE-2023-43538 — Critical (CVSS 9.3): Memory corruption in TZ Secure OS while Tunnel Invoke Manager initialization.

All CVEs affecting Qualcomm Fastconnect 6200 Firmware →

Other CWE-126 (Buffer Over-read) vulnerabilities

CVE-2026-41898 — Critical (CVSS 9.8): rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.24 to before 0.10.78, the FFI…
CVE-2023-36397 — Critical (CVSS 9.8): Windows Pragmatic General Multicast (PGM) Remote Code Execution Vulnerability
CVE-2025-12106 — Critical (CVSS 9.1): Insufficient argument validation in OpenVPN 2.7_alpha1 through 2.7_rc1 allows an attacker to trigger a heap buffer…
CVE-2023-51773 — Critical (CVSS 9.1): BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in bacapp_decode_application_data in bacapp.c.
CVE-2021-34584 — Critical (CVSS 9.1): Crafted web server requests can be utilised to read partial stack or heap memory or may trigger a denial-of- service…
CVE-2025-36855 — High (CVSS 8.8): A vulnerability ( CVE-2025-21176 https://www.cve.org/CVERecord ) exists in DiaSymReader.dll due to buffer over-read.…

Browse all CWE-126 (Buffer Over-read) vulnerabilities →