CVE-2020-1968

3.7 LOW 5% exploit odds Fix listed

What it is

The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In such a case this would result in the attacker being able to eavesdrop on all encrypted communications sent over that TLS connection. The attack can only be exploited if an implementation re-uses a DH secret across multiple TLS connections. Note that this issue only impacts DH ciphersuites and not ECDH ciphersuites. This issue affects OpenSSL 1.0.2 which is out of support and no longer receiving public updates. OpenSSL 1.1.1 is not vulnerable to this issue. Fixed in OpenSSL 1.0.2w (Affected 1.0.2-1.0.2v).

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 4.9% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2020-09-09 14:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 03:02 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 4.9% in the next 30 days (EPSS).
Severity: 3.7 LOW (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2020-09-09 14:15 UTC
Last modified: 2026-06-17 03:02 UTC
Exploit probability: 4.9% · EPSS, next 30 days
Weakness: CWE-203
Record status: Modified

Affected

OpenSSL ≤ 1.0.2v
Canonical Ubuntu Linux 16.04
Canonical Ubuntu Linux 18.04
Debian Linux 9.0
Oracle Jd Edwards World Security a9.4
Oracle Peoplesoft Enterprise Peopletools 8.56
Oracle Peoplesoft Enterprise Peopletools 8.57
Oracle Peoplesoft Enterprise Peopletools 8.58

Attack profile CVSS 3.1 · 3.7

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: None
Availability: None

Raw vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2020-1968.md and follow it. Check whether this project is affected by CVE-2020-1968. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record