CVE-2020-35733
An issue was discovered in Erlang/OTP before 23.2.2. The ssl application 10.2 accepts and trusts...
An issue was discovered in Erlang/OTP before 23.2.2. The ssl application 10.2 accepts and trusts an invalid X.509 certificate chain to a trusted root Certification Authority.
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 was discovered in Erlang/OTP before 23.2.2. The ssl application 10.2 accepts and trusts an invalid X.509 certificate chain to a trusted root Certification Authority.
- Record
CVE-2020-35733- 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 - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in Erlang/OTP before 23.2.2. The ssl application 10.2 accepts and trusts an invalid X.509 certificate chain to a trusted root Certification Authority.
- Record
CVE-2020-35733- Updated
- 2026-11-02
EUVDEUVD-2020-23389 No score
An issue was discovered in Erlang/OTP before 23.2.2. The ssl application 10.2 accepts and trusts an invalid X.509 certificate chain to a trusted root Certification Authority.
- Record
EUVD-2020-23389- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-xg86-vxqv-4j86 No score
An issue was discovered in Erlang/OTP before 23.2.2. The ssl application 10.2 accepts and trusts...
An issue was discovered in Erlang/OTP before 23.2.2. The ssl application 10.2 accepts and trusts an invalid X.509 certificate chain to a trusted root Certification Authority.
- Record
GHSA-xg86-vxqv-4j86- Weakness
- CWE-295
- Updated
- 2026-11-02
OSVALPINE-CVE-2020-35733
An issue was discovered in Erlang/OTP before 23.2.2. The ssl application 10.2 accepts and trusts an invalid X.509 certificate chain to a trusted root Certification Authority.
- Record
ALPINE-CVE-2020-35733- 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
- 2026-11-03
OSV
An issue was discovered in Erlang/OTP before 23.2.2. The ssl application 10.2 accepts and trusts an invalid X.509 certificate chain to a trusted root Certification Authority.
- Record
CVE-2020-35733- 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
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OSVDEBIAN-CVE-2020-35733
An issue was discovered in Erlang/OTP before 23.2.2. The ssl application 10.2 accepts and trusts an invalid X.509 certificate chain to a trusted root Certification Authority.
- Record
DEBIAN-CVE-2020-35733- 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-2020-35733
An issue was discovered in Erlang/OTP before 23.2.2. The ssl application 10.2 accepts and trusts an invalid X.509 certificate chain to a trusted root Certification Authority.
- Record
UBUNTU-CVE-2020-35733- 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
OSVopenSUSE-SU-2024:10740-1 No score
erlang-24.0.5-2.1 on GA media
These are all security issues fixed in the erlang-24.0.5-2.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10740-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2025:15740-1 No score
erlang27-27.1.3-1.1 on GA media
These are all security issues fixed in the erlang27-27.1.3-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2025:15740-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
erlangAlpine:v3.14 |
before 23.2.5-r0 | 23.2.5-r0 |
erlangAlpine:v3.15 |
before 23.2.5-r0 | 23.2.5-r0 |
erlangAlpine:v3.16 |
before 23.2.5-r0 | 23.2.5-r0 |
erlangAlpine:v3.17 |
before 23.2.5-r0 | 23.2.5-r0 |
erlangAlpine:v3.18 |
before 23.2.5-r0 | 23.2.5-r0 |
erlangAlpine:v3.19 |
before 23.2.5-r0 | 23.2.5-r0 |
erlangAlpine:v3.20 |
before 23.2.5-r0 | 23.2.5-r0 |
erlangAlpine:v3.21 |
before 23.2.5-r0 | 23.2.5-r0 |
erlang26Alpine:v3.22 |
before 23.2.5-r0 | 23.2.5-r0 |
erlangDebian:12 |
before 1:23.2.2+dfsg-1 | 1:23.2.2+dfsg-1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| 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-2020-35733 is a high vulnerability (CVSS 7.5) in Erlang Erlang\/otp, published January 15, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.17%, the 67th percentile. Fixed in erlang 23.2.5-r0.
References
erlang.org/news
github.com/erlang/otp/releases
erlang.org/pipermail/erlang-questions/2021-January/100357.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E4CXZWUOZELT7A5ZN6DJRQHX7L35V4PW
nvd.nist.gov/vuln/detail/CVE-2020-35733
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security.alpinelinux.org/vuln/CVE-2020-35733
security-tracker.debian.org/tracker/CVE-2020-35733
ubuntu.com/security/CVE-2020-35733
cve.org/CVERecord?id=CVE-2020-35733
suse.com/security/cve/CVE-2020-25623