01 Record
CVE-2026-20419
In wlan AP/STA firmware, there is a possible system becoming irresponsive due to an uncaught exception. This could lead to remote (proximal/adjacent) denial of service with no additional execution
MediumPUBLISHEDCNA: MediaTek
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
02 Description
In wlan AP/STA firmware, there is a possible system becoming irresponsive due to an uncaught exception. This could lead to remote (proximal/adjacent) denial of service with no additional execution
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.78% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 55.6% of scored records. A rank, not a probability.
- NVD base score
- 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-02-02 08:16Z8 MO AGO
- Last updated
- 2026-03-30 13:03Z7 MO AGO
- Reserved
- 2025-11-03
- Assigning CNA
- MediaTek
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.5)
- CNA CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-754Improper Check for Unusual or Exceptional ConditionsClass
- Data version
- 5.2
- Document digest
- 5ebda7717e86c395a55bfd1fedd9c1215b0b8b25dbc62dbc6ebc48a6187a0ee9
05 Affected products
VendorProductVersionsPlatforms
MediaTek, Inc.MediaTek chipsetMT6890, MT6989TB, MT7902, MT7915, MT7916, MT7920, MT7921, MT7922, MT7925, MT7927, MT7981, MT7986, MT8196, MT8668, MT8676, MT8678, MT8775, MT8791T, MT8792, MT8793, MT8796, MT8873, MT8883, MT8893, MT8910—
06 References
- corp.mediatek.comhttps://corp.mediatek.com/product-security-bulletin/February-2026