How severe is CVE-2023-46894?

CVE-2023-46894 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-46894 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-46894?

CVE-2023-46894 affects Espressif Esptool. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-46894?

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-2023-46894 published?

CVE-2023-46894 was published on 2023-11-09 and last updated on 2026-06-17.

CVE-2023-46894

CVE-2023-46894 is a high-severity vulnerability in Espressif Esptool with a CVSS 3.x base score of 7.5. 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-326.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-326
Affected product: Espressif Esptool
Published: 2023-11-09
Last modified: 2026-06-17

Description

An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.

Frequently asked questions

What is CVE-2023-46894?: An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.
How severe is CVE-2023-46894?: CVE-2023-46894 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-46894 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-46894?: CVE-2023-46894 affects Espressif Esptool. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-46894?: 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-2023-46894 published?: CVE-2023-46894 was published on 2023-11-09 and last updated on 2026-06-17.

References

https://github.com/espressif/esptool/issues/926

Affected products (1)

cpe:2.3:a:espressif:esptool:4.6.2:*:*:*:*:*:*:*

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