CVE-2016-20012: netapp clustered_data_ontap Observable Discrepancy
Vulnerability summary
CVE-2016-20012 is a medium (CVSS 5.3) Observable Discrepancy vulnerability in netapp clustered_data_ontap. EPSS estimates a 5.33% chance of exploitation in the next 30 days, higher than 92.5% of scored vulnerabilities. 2 public exploits are recorded.
Timeline
- 15-09-2021PublishedVulnerability first disclosed.
- 29-05-2026Last modifiedVulnerability information updated.
Description
OpenSSH through 8.7 allows remote attackers, who have a suspicion that a certain combination of username and public key is known to an SSH server, to test whether this suspicion is correct. This occurs because a challenge is sent only when that combination could be valid for a login session. NOTE: the vendor does not recognize user enumeration as a vulnerability for this product
CVSS metrics
5 scores · 4 sources · 2 versions- NVDNIST5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS trend
Probability
5.33%
Chance of exploitation in the next 30 days
Percentile
93%
Versus all other CVEs
30-day change
0.00 pp
From 5.33% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundOpenssh Portable
Maturity: poc
Exploit Reference (rushter.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Netapp4 products
Ubuntu2 products
- opensshAll versions (No fix recorded)
- openssh-ssh1All versions (No fix recorded)
Debian1 product
- opensshAll versions (No fix recorded)
Openbsd1 product
- openssh≤ 8.7
4 vendors · 8 products
References
12 links- github.com/openssh/openssh-portable/blob/d0fffc88c8fe90c1815c6f4097bc8cbcabc0f3dd/auth2-pubkey.cX Refsource MISCExploitThird Party AdvisoryREPORT
