How severe is CVE-2021-46899?

CVE-2021-46899 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-46899 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46899?

CVE-2021-46899 affects Antonymale Synctrayzor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-46899?

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-2021-46899 published?

CVE-2021-46899 was published on 2023-12-09 and last updated on 2026-06-17.

CVE-2021-46899

CVE-2021-46899 is a high-severity vulnerability in Antonymale Synctrayzor with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Antonymale Synctrayzor
Published: 2023-12-09
Last modified: 2026-06-17

Description

SyncTrayzor 1.1.29 enables CEF (Chromium Embedded Framework) remote debugging, allowing a local attacker to control the application.

Frequently asked questions

What is CVE-2021-46899?: SyncTrayzor 1.1.29 enables CEF (Chromium Embedded Framework) remote debugging, allowing a local attacker to control the application.
How severe is CVE-2021-46899?: CVE-2021-46899 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-46899 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46899?: CVE-2021-46899 affects Antonymale Synctrayzor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46899?: 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-2021-46899 published?: CVE-2021-46899 was published on 2023-12-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:antonymale:synctrayzor:1.1.29:*:*:*:*:*:*:*