CVE-2026-20501
CVE-2026-20501 is a high-severity vulnerability in Mediatek Mt2718 Firmware with a CVSS 3.x base score of 8.4. 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-122.
Key facts
- Severity: High (CVSS 3.x base score 8.4)
- EPSS exploit prediction: 0% (2nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-122
- Affected product: Mediatek Mt2718 Firmware
- Published:
- Last modified:
Description
In vdec, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11262030; Issue ID: MSV-9197.
Frequently asked questions
- What is CVE-2026-20501?
- In vdec, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11262030; Issue ID: MSV-9197.
- How severe is CVE-2026-20501?
- CVE-2026-20501 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-20501 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-20501?
- CVE-2026-20501 primarily affects Mediatek Mt2718 Firmware. In total, 53 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-20501?
- 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-2026-20501 published?
- CVE-2026-20501 was published on 2026-09-07 and last updated on 2026-09-09.
References
Affected products (53)
- cpe:2.3:o:mediatek:mt2718_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6580_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6739_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6761_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6765_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6768_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6769_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6779_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6781_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6785_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6789_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6833_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6835_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6853_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6855_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6858_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6873_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6877_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6878_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6879_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6881_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6883_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6885_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6886_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6889_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6893_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6895_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6897_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6899_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6983_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6985_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6989_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6991_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt6993_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt8126_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt8171_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt8186_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt8188_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt8189_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:mediatek:mt8195_firmware:-:*:*:*:*:*:*:*
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