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Vulnerabilities

Vulnerability · CVE-2015-20112

RLPx 5 has two CTR streams based on the same key, IV, and nonce.

Published Jun 29, 2025 · catalog updated Jun 30, 2025 · RLPx

Last checked Oct 27, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2015-20112. EPSS is 0.17%. Act only if a listed version of RLPx is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low3.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.17%
Remediation
Vendor / distro source
Affected products
vendor ethereum RLPx 5

RLPx 5 has two CTR streams based on the same key, IV, and nonce. This can facilitate decryption on a private network.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor ethereum RLPx 55

How to fix CVE-2015-20112

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2015-20112. EPSS is 0.17%. Act only if a listed version of RLPx is installed.

Which versions are affected?

Compare what you have installed with ethereum RLPx 5 5. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.17%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 29, 2025 · EUVD

    Detected

    RLPx 5 has two CTR streams based on the same key, IV, and nonce. This can facilitate decryption on a private network.

  2. Jun 30, 2025 · EUVD

    Updated

    RLPx 5 has two CTR streams based on the same key, IV, and nonce. This can facilitate decryption on a private network.

Sources

  • CVE.orgVulnerability recordCVE-2015-20112

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2015-20112

    30-day exploitation probability 0.17%

    first.org
  • EUVDVulnerability recordEUVD-2015-9392

    RLPx 5 has two CTR streams based on the same key, IV, and nonce. This can facilitate decryption on a private network.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 27, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 24, 2026
  • CVE.orgOct 21, 2026
  • EUVDOct 20, 2026