What’s Vulnerable › Vulnerabilities

CVE-2025-21421: Buffer Over-read in Display

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-04-07 · updated 2026-06-17
• Weakness: CWE-126

Description

Memory corruption while processing escape code in API.

Affected products

• Qualcomm Aqt1000 Firmware: all versions
• Qualcomm Fastconnect 6200 Firmware: all versions
• Qualcomm Fastconnect 6700 Firmware: all versions
• Qualcomm Fastconnect 6800 Firmware: all versions
• Qualcomm Fastconnect 6900 Firmware: all versions
• Qualcomm Fastconnect 7800 Firmware: all versions
• Qualcomm Qca6391 Firmware: all versions
• Qualcomm Qca6420 Firmware: all versions
• Qualcomm Qca6430 Firmware: all versions
• Qualcomm Qcm5430 Firmware: all versions
• Qualcomm Qcm6490 Firmware: all versions
• Qualcomm Qcs5430 Firmware: all versions
• Qualcomm Qcs6490 Firmware: all versions
• Qualcomm Sc8180X+Sdx55 Firmware: all versions
• Qualcomm Sc8380Xp Firmware: all versions
• Qualcomm Sm6250 Firmware: all versions
• Qualcomm Snapdragon 7C+ Gen 3 Compute Firmware: all versions
• Qualcomm Snapdragon 7C Compute Platform (Sc7180-Ac) Firmware: all versions
• Qualcomm Snapdragon 7C Gen 2 Compute Platform (Sc7180-Ad) "Rennell Pro" Firmware: all versions
• Qualcomm Snapdragon 8C Compute Platform (Sc8180X-Ad) Firmware: all versions
• Qualcomm Snapdragon 8C Compute Platform (Sc8180Xp-Ad) Firmware: all versions
• Qualcomm Snapdragon 8Cx Compute Platform (Sc8180X-Aa) Firmware: all versions
• Qualcomm Snapdragon 8Cx Compute Platform (Sc8180X-Ab) Firmware: all versions
• Qualcomm Snapdragon 8Cx Compute Platform (Sc8180Xp-Ac) Firmware: all versions
• Qualcomm Snapdragon 8Cx Compute Platform (Sc8180Xp-Af) Firmware: all versions
• Qualcomm Snapdragon 8Cx Gen 2 5G Compute Platform (Sc8180X-Ac) Firmware: all versions
• Qualcomm Snapdragon 8Cx Gen 2 5G Compute Platform (Sc8180X-Af) Firmware: all versions
• Qualcomm Snapdragon 8Cx Gen 2 5G Compute Platform (Sc8180Xp-Aa) Firmware: all versions
• Qualcomm Snapdragon 8Cx Gen 2 5G Compute Platform (Sc8180Xp-Ab) Firmware: all versions
• Qualcomm Snapdragon 8Cx Gen 3 Compute Platform (Sc8280Xp-Ab) Firmware: all versions

References

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

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