CVE-2023-46894
esptool allows attackers to view sensitive information via weak cryptographic algorithm
An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.
- Record
CVE-2023-46894- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-326
- Updated
- 2026-11-02
CVE List No score
An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.
- Record
CVE-2023-46894- Updated
- 2026-11-02
EUVDEUVD-2023-0073 No score
An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.
- Record
EUVD-2023-0073- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3f38-96qm-r3fw
esptool allows attackers to view sensitive information via weak cryptographic algorithm
An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.
- Record
GHSA-3f38-96qm-r3fw- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-326
- Updated
- 2026-11-02
OSVGHSA-3f38-96qm-r3fw
esptool allows attackers to view sensitive information via weak cryptographic algorithm
An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.
- Record
GHSA-3f38-96qm-r3fw- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-326
- Updated
- 2026-11-02
OSVPYSEC-2023-234
An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.
- Record
PYSEC-2023-234- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2023-46894
An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.
- Record
UBUNTU-CVE-2023-46894- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSV No score
An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.
- Record
CVE-2023-46894- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
esptoolPyPI |
through 4.6.2 | None known |
esptoolPyPI |
through 4.6.2, plus listed versions 1.0.01.0.11.11.21.2.1 Show 38 moreShow less1.32.02.0.12.12.22.2.12.32.3.12.4.02.4.12.5.02.5.12.62.72.83.03.13.23.33.3.13.3.23.3.34.04.0.14.14.24.2.14.34.44.54.5.14.5.dev04.5.dev14.5.dev24.5.dev34.64.6.14.6.dev1 |
None known |
esptoolUbuntu:16.04:LTS |
All versions, plus listed versions 0.4.6-1 |
None known |
esptoolUbuntu:18.04:LTS |
All versions, plus listed versions 0.4.6-12.1+dfsg1-12.1+dfsg1-2 |
None known |
esptoolUbuntu:20.04:LTS |
All versions, plus listed versions 2.6+dfsg-12.8+dfsg-1 |
None known |
esptoolUbuntu:22.04:LTS |
All versions, plus listed versions 2.8+dfsg-1 |
None known |
esptoolUbuntu:24.04:LTS |
All versions, plus listed versions 4.6.2+dfsg-0.14.7.0+dfsg-0.1 |
None known |
esptoolUbuntu:25.10 |
All versions, plus listed versions 4.7.0+dfsg-0.1 |
None known |
esptoolUbuntu:26.10 |
All versions, plus listed versions 4.7.0+dfsg-0.2 |
None known |
esptoolUbuntu:26.04:LTS |
All versions, plus listed versions 4.7.0+dfsg-0.14.7.0+dfsg-0.2 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-46894 is a high vulnerability (CVSS 7.5) in Espressif Esptool, published November 9, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.48%, the 41st percentile. No source names a fixed version.
References
github.com/espressif/esptool/issues/926
nvd.nist.gov/vuln/detail/CVE-2023-46894
ubuntu.com/security/CVE-2023-46894
cve.org/CVERecord?id=CVE-2023-46894