Docker before 1.3.1 and docker-py before 0.5.3 fall back to HTTP when the HTTPS connection to the registry fails, which allows man-in-the-middle attackers to conduct downgrade attacks and obtain authentication and image data by leveraging a network position between the client and the registry to block HTTPS traffic.
CVE-2014-5277
This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 5.0 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:P/I:N/A:N. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 1.9% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v2.0 (legacy)
- 5.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
- EG Score
- 5.0(low)
- EG Risk
- 28(Track)EG Risk 28/100SSVC: Track
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 computedSeverity50% × 45%Exploitation2% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 2%
- EPSS %ILE
- 77%
- KEV
- Not listed
Published
November 17, 2014
Last Modified
May 6, 2026
References (4)
- cve@mitrehttp://lists.opensuse.org/opensuse-updates/2014-11/msg00048.html
- cve@mitrehttps://groups.google.com/forum/#%21topic/docker-user/oYm0i3xShJU
- af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2014-11/msg00048.html
- af854a3a-2127-422b-91ae-364da2661108https://groups.google.com/forum/#%21topic/docker-user/oYm0i3xShJU
Affected Packages
(2 across 2 ecosystems)
Go(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/docker/docker | — | 1.3.1 | — |
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| docker-py | 0.0.4 ... 0.5.2 (20 versions) | 0.5.3 | — |
All Vendor Advisories
(1)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 11× in last 7d / 38× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 102 total refreshes for this CVE.
- 2026-07-26 14:50 UTCEPSS rescore
- 2026-07-26 13:51 UTCEG score recompute▲ 5.00
- 2026-07-24 14:13 UTCEPSS rescore
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- 2026-07-23 01:13 UTCEG score recompute
- 2026-07-23 00:17 UTCEG score recompute
- 2026-07-22 21:55 UTCEG score recompute
- 2026-07-22 14:04 UTCEPSS rescore
- 2026-07-21 23:48 UTCOSV refresh
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- 2026-07-08 15:10 UTCEPSS rescore
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- 2026-06-16 06:13 UTCOSV refresh
- 2026-06-14 23:14 UTCEPSS rescore
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- 2026-05-29 13:41 UTCEPSS rescore
- 2026-05-28 15:01 UTCEG score recompute
- 2026-05-28 15:01 UTCVendor advisory
- 2026-05-28 13:42 UTCEPSS rescore
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- 2026-05-28 04:03 UTCOSV refresh
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Related CVEs(same vendor)
Same vendor
10 shownmsrc
Frequently asked(4)
What is CVE-2014-5277?
When was CVE-2014-5277 disclosed?
Is CVE-2014-5277 actively exploited?
How do I remediate CVE-2014-5277?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2014-5277
Is Your Infrastructure Affected by CVE-2014-5277?
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