7.5

CVE-2026-21549: unisoc (shanghai) technologies co., ltd. t8100/t9100/t8200/t8300 Improper Input Validation

Deferred
Published 03-08-2026Last modified 03-08-2026

Vulnerability summary

CVE-2026-21549 is a high (CVSS 7.5) Improper Input Validation vulnerability in unisoc (shanghai) technologies co., ltd. t8100/t9100/t8200/t8300. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 52.8% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.71%
0%100%
Low · +0.30 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 03-08-2026
    PublishedVulnerability first disclosed.
  2. 03-08-2026
    Last modifiedVulnerability information updated.

Description

In modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privileges needed

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.71%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

Increase +0.30 pp

From 0.40% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Unisoc (shanghai) technologies co., ltd.1 product

1 vendor · 1 product

References

1 links