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 con
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).
Noroxi analysis
No Noroxi analysis for this record yet
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We use this product, ask for help- Published
- Sep 9, 2020
- Updated
- Jun 16, 2026
- EPSS
- 4.9% · 92th percentile
- CWE
- CWE-203
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Report tools
Action score
15
Monitor
Low priority for now.
- CVSS
- 14 / 40 · 3.7 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 4.9%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| openssl | openssl | cpe:2.3:a:openssl:openssl |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| oracle | jd edwards world security | cpe:2.3:a:oracle:jd_edwards_world_security |
| oracle | peoplesoft enterprise peopletools | cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools |
| oracle | ethernet switch es2-64 firmware | cpe:2.3:o:oracle:ethernet_switch_es2-64_firmware |
| oracle | ethernet switch es2-64 | cpe:2.3:h:oracle:ethernet_switch_es2-64 |
| oracle | ethernet switch es2-72 firmware | cpe:2.3:o:oracle:ethernet_switch_es2-72_firmware |
| oracle | ethernet switch es2-72 | cpe:2.3:h:oracle:ethernet_switch_es2-72 |
| fujitsu | m10-1 firmware | cpe:2.3:o:fujitsu:m10-1_firmware |
| fujitsu | m10-1 | cpe:2.3:h:fujitsu:m10-1 |
| fujitsu | m10-4 firmware | cpe:2.3:o:fujitsu:m10-4_firmware |
and 13 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux16.04
- canonical ubuntu linux18.04
- debian debian linux9.0
- fujitsu m10-1 firmwarebefore xcp2400
- fujitsu m10-1 firmwarebefore xcp3100
- fujitsu m10-4 firmwarebefore xcp3100
- fujitsu m10-4 firmwarebefore xcp2400
- fujitsu m10-4s firmwarebefore xcp2400
- fujitsu m10-4s firmwarebefore xcp3100
- fujitsu m12-1 firmwarebefore xcp3100
- fujitsu m12-1 firmwarebefore xcp2400
- fujitsu m12-2 firmwarebefore xcp2400
- fujitsu m12-2 firmwarebefore xcp3100
- fujitsu m12-2s firmwarebefore xcp3100
- fujitsu m12-2s firmwarebefore xcp2400
- openssl openssl1.0.2 and later · up to 1.0.2v inclusive
- oracle ethernet switch es1-24 firmware1.3.1
- oracle ethernet switch es2-64 firmware2.0.0.14
- oracle ethernet switch es2-72 firmware2.0.0.14
- oracle ethernet switch tor-72 firmware1.2.2
Versions reported by the vendor
Affected version ranges reported by the assigning authority (openssl). Independent of NVD's CPE analysis and usually ahead of it.
OpenSSL OpenSSL
- Fixed in OpenSSL 1.0.2w (Affected 1.0.2-1.0.2v)affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | openssl | before 1.1.0c-1 | 1.1.0c-1 |
| Debian:9 | openssl1.0 | before 1.0.2u-1~deb9u2 | 1.0.2u-1~deb9u2 |
| SUSE:Linux Enterprise Module for Legacy 12 | compat-openssl098 | before 0.9.8j-106.21.1 | 0.9.8j-106.21.1 |
| SUSE:Linux Enterprise Point of Sale 11 SP3 | openssl | before 0.9.8j-0.106.34.1 | 0.9.8j-0.106.34.1 |
| SUSE:Linux Enterprise Server 11-SECURITY | openssl1 | before 1.0.1g-0.58.27.2 | 1.0.1g-0.58.27.2 |
Same product
openssl: all recordsOther highest-scoring records for the same primary product.
- CVE-2014-0160The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remKEV90Now
- CVE-2021-3711SM2 Decryption Buffer Overflow65This week
- CVE-2003-0545Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code 65This week
- CVE-2016-2108The ASN.1 implementation in OpenSSL before 1.0.1o and 1.0.2 before 1.0.2c allows remote attackers to execute arbitrary code or cause a denia62This week
- CVE-2016-6309statem/statem.c in OpenSSL 1.1.0a does not consider memory-block movement after a realloc call, which allows remote attackers to cause a den60This week
- CVE-2022-3786X.509 Email Address Variable Length Buffer Overflow58Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:openssl | 1.1.0c-1 · Debian:12 | Package registry (OSV) |
| debian:openssl1.0 | 1.0.2u-1~deb9u2 · Debian:9 | Package registry (OSV) |
| suse:compat-openssl098 | 0.9.8j-106.21.1 · SUSE:Linux Enterprise Module for Legacy 12 | Package registry (OSV) |
| suse:openssl | 0.9.8j-0.106.34.1 · SUSE:Linux Enterprise Point of Sale 11 SP3 | Package registry (OSV) |
| suse:openssl1 | 1.0.1g-0.58.27.2 · SUSE:Linux Enterprise Server 11-SECURITY | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- low · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-203 · Observable DiscrepancyCVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.debian.org/debian-lts-announce/2020/09/msg00016.html
- security.gentoo.org/glsa/202210-02
- security.netapp.com/advisory/ntap-20200911-0004/
- usn.ubuntu.com/4504-1/
- www.openssl.org/news/secadv/20200909.txt
- www.oracle.com//security-alerts/cpujul2021.html
- www.oracle.com/security-alerts/cpuApr2021.html
- www.oracle.com/security-alerts/cpuapr2022.html
- www.oracle.com/security-alerts/cpujan2021.html
- www.oracle.com/security-alerts/cpuoct2021.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.