CVE-2014-3566 Public exploit Low · 3.4 EPSS >99.9%
The SSL protocol 3.0, as used in OpenSSL through 1.0.1i and other products, uses nondeterministic CBC padding, which…
Summary
The SSL 3.0 protocol, as used in OpenSSL through 1.0.1i and other products, relies on nondeterministic CBC padding that makes it possible for an attacker to recover cleartext data through a padding-oracle attack. Exploitation requires the attacker to be positioned as a man-in-the-middle on the network path, with a high-complexity attack and user interaction needed to trigger it.
Official description · CVE.org
The SSL protocol 3.0, as used in OpenSSL through 1.0.1i and other products, uses nondeterministic CBC padding, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack, aka the "POODLE" issue.
Priority scorePatchfirst’s 0 to 100 ranking. It adds points for CISA KEV listing, ransomware use, EPSS, threat reports, public exploit code and CVSS. Every CVE page shows the breakdown. Breakdown
29.4 / 100
- Exploited
- Not confirmed
- Reports
- 0
- Tactics
- 0/15
Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
Public exploit code (Metasploit) was available 1 day before disclosure.
- Public exploit codeMetasploit1 day before
- Disclosedday 0
Patch historyEarlier and later CVEs in the same code, in date order. It shows when a fix was bypassed or incomplete and which version finally fixed it.
See the family tree5 related vulnerabilities in the same code over 3 years.
Same bug familyLinked by evidence that a fix failed or the same code was patched again. Oldest first.
- This CVECVE-2014-3566The SSL protocol 3.0, as used in OpenSSL through 1.0.1i and…15 Oct 2014
variant in the same codeHigh
Why these are linked: Link confidenceHow strong the evidence is that two CVEs are related. High: stated in the CVE text or linked in an advisory, or the same code was patched one release apart. Medium: the same code, or a version step plus a similar description. Low: similar description only.
- Stated in the CVE text
…x before TLS 1.2, 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).
- Stated in the CVE text
- same family
- same family
- same family
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
No techniques linkedNo high- or medium-confidence techniques. The 1 available link are lower confidence and listed below.
Lower-confidence links (1)
These come from early or generic mappings, text matching, or contradict this CVE’s details (for example a public-facing technique on a bug that needs a user to open a file). Shown for completeness.
- Adversary-in-the-MiddleT1557 CTID attack_to_cve Phase 1 "Uncategorized" mapping (not staged by impact)
What security researchers reported
Not named in any threat report yetAlso mentioned in 7 community threat pulses (AlienVault OTX)
Weaker evidencePulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.
- Spam “Broken Seal” DocuSign-themed Delivery w/Fileless Process Hollowing (Zeppelin/Bloat-A) by msudosos22 Mar 2026
- Spam “Broken Seal” DocuSign-themed Delivery w/Fileless Process Hollowing (Zeppelin/Bloat-A) by msudosos22 Mar 2026
- CVE Data16 Feb 2026
- “Broken Seal” DocuSign-themed Delivery with Fileless Process Hollowing (Zeppelin/Bloat-A)13 Feb 2026
- Python: OVSAgentServer Document (autofilled name)5 Jun 2024
- Proof Point Emerging Exploit list14 Dec 2022
- 1 more on OTX