synced 7 MIN AGO
01 Record

CVE-2023-20702

In 5G NRLC, there is a possible invalid memory access due to lack of error handling. This could lead to remote denial of service, if UE received invalid 1-byte rlc sdu, with no additional execution

HighPUBLISHEDCNA: MediaTek
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

02 Description

In 5G NRLC, there is a possible invalid memory access due to lack of error handling. This could lead to remote denial of service, if UE received invalid 1-byte rlc sdu, 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.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.08% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 65.0% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/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
2023-11-06 03:50Z2 YR AGO
Last updated
2024-09-05 15:17Z2 YR AGO
Reserved
2022-10-28
Assigning CNA
MediaTek
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
No CWE assigned
Data version
5.1
Document digest
caaca3e543d966563ad6b638cae388e8616024e087b9de7f2b7b8ff906044902

05 Affected products

VendorProductVersionsPlatforms
mediatekmt68350 to *—
mediatekmt68730 to *—
mediatekmt68750 to *—
mediatekmt68790 to *—
mediatekmt68830 to *—
mediatekmt68850 to *—
mediatekmt68860 to *—
mediatekmt68890 to *—
mediatekmt68950 to *—
mediatekmt69800 to *—
mediatekmt69830 to *—
mediatekmt69850 to *—
mediatekmt69900 to *—
mediatekmt86730 to *—
mediatekmt86750 to *—
mediatekmt87910 to *—
mediatekmt8791t0 to *—
mediatekmt87970 to *—
mediatekmt87980 to *—

06 References