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CVE-2020-1968

16
FAUCET Score

CVE-2020-1968, known as the Raccoon attack, is a low-severity vulnerability in the TLS specification affecting OpenSSL 1.0.2 and other products like Canonical and Debian. It allows an attacker to compute the pre-master secret in Diffie-Hellman (DH) based ciphersuites, enabling eavesdropping on encrypted communications if a DH secret is reused across multiple TLS connections. The attack has a network attack vector and high complexity, with a low impact on confidentiality and no impact on integrity or availability. There is no evidence of active exploitation, public exploit code, or significant community attention beyond a single Reddit mention.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.0.2, <= 1.0.2vCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
a9.4CPE matchmatch criteria
cpe:2.3:a:oracle:jd_edwards_world_security:a9.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.7LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.80%
Probability of exploitation in next 30 days
EPSS Percentile
91.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0480 is in the 90th percentile among its peer group of 1,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

oraclepatch availablevia nvd_reference
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: openssl
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: openssl098e
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: compat-openssl10
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: mingw-openssl

Vendor Advisories (1)

redhatCVE-2020-1968Low

openssl: Information exposure when DH secret are reused across multiple TLS connections

Sep 9, 2020

References

lists.debian.org / debian-lts-announce/2020/09/msg00016.html
Mailing ListThird Party Advisory
security.gentoo.org / glsa/202210-02
Third Party Advisory
security.netapp.com / advisory/ntap-20200911-0004
Third Party Advisory
usn.ubuntu.com / 4504-1
Third Party Advisory
openssl.org / news/secadv/20200909.txt
Vendor Advisory
oracle.com / security-alerts/cpuApr2021.html
PatchThird Party Advisory
oracle.com / security-alerts/cpuapr2022.html
PatchThird Party Advisory
oracle.com / security-alerts/cpujan2021.html
Third Party Advisory
oracle.com / /security-alerts/cpujul2021.html
PatchThird Party Advisory
oracle.com / security-alerts/cpuoct2021.html
PatchThird Party Advisory