Erlang/OTP before 18.0-rc1 does not properly check CBC padding bytes when terminating connections, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack, a variant of CVE-2014-3566 (aka POODLE).
CVE-2015-2774
MEDIUMNVD 5.95.9—
EchelonGraph scoreMEDIUM confidence
Score 5.9 from GitHub Security Advisory published 2022-05-14. NVD baseline CVSS 5.9; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1.9%CVSS: 5.9Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 5.9
- EG Score
- 5.9MEDIUMmedium confidence
- EG Risk
- 32EG Risk 32/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity59% × 45%Exploitation2% × 40%Automatability30% × 15%CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 1.9%
- EPSS %ILE
- 78th
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
April 7, 2016
Last Modified
June 17, 2026
References (16)
- cve@mitrehttp://lists.opensuse.org/opensuse-updates/2016-02/msg00124.html
- cve@mitrehttp://openwall.com/lists/oss-security/2015/03/27/6
- cve@mitrehttp://openwall.com/lists/oss-security/2015/03/27/9
- cve@mitrehttp://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- cve@mitrehttp://www.securityfocus.com/bid/73398
- cve@mitrehttps://usn.ubuntu.com/3571-1/
- cve@mitrehttps://web.archive.org/web/20150905124006/http://www.erlang.org/news/85
- cve@mitrehttps://www.imperialviolet.org/2014/12/08/poodleagain.html
- af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2016-02/msg00124.html
- af854a3a-2127-422b-91ae-364da2661108http://openwall.com/lists/oss-security/2015/03/27/6
- af854a3a-2127-422b-91ae-364da2661108http://openwall.com/lists/oss-security/2015/03/27/9
- af854a3a-2127-422b-91ae-364da2661108http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/73398
- af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3571-1/
- af854a3a-2127-422b-91ae-364da2661108https://web.archive.org/web/20150905124006/http://www.erlang.org/news/85
Vendor Advisories for CVE-2015-2774
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Patch Availability(4)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| Debian:11 | erlang @ 1:17.3-dfsg-4 (the fix for one version range) | — | 0 |
| Debian:12 | erlang @ 1:17.3-dfsg-4 (the fix for one version range) | — | 0 |
| Debian:13 | erlang @ 1:17.3-dfsg-4 (the fix for one version range) | — | 0 |
| Debian:14 | erlang @ 1:17.3-dfsg-4 (the fix for one version range) | — | 0 |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Related CVEs
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Frequently asked(5)
What is CVE-2015-2774?
CVE-2015-2774 is a medium vulnerability published on April 7, 2016. Erlang/OTP before 18.0-rc1 does not properly check CBC padding bytes when terminating connections, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack, a variant of CVE-2014-3566 (aka POODLE).
When was CVE-2015-2774 disclosed?
CVE-2015-2774 was first published on April 7, 2016, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-2774 actively exploited?
CVE-2015-2774 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.9% probability of exploitation in the next 30 days (78th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2015-2774?
CVE-2015-2774 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2015-2774?
A fix for CVE-2015-2774 is available: update to the fixed version the vendor names in its advisory.
Dependency Blast Radius
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