Security readout for executives and security teams
This CVE describes a remote memory-exhaustion denial-of-service condition in OpenSSH. An unauthenticated network attacker could consume server memory by abusing SSH key-exchange initialization handling. The cited record notes OpenSSH upstream reportedly did not consider it a security issue, so treat vendor advisories as authoritative for affected downstream products. Exposure is most likely on internet-accessible SSH services running OpenSSH 6.x or 7.x through 7.3, including vendor-packaged or embedded builds. Downstream exposure must be confirmed against vendor advisories such as FreeBSD, Gentoo, NetApp, and Siemens materials. Prioritize remediation for externally exposed SSH services and network appliances. Business risk is service interruption, especially for systems used for administration or automation. The absence of KEV evidence lowers urgency versus exploited remote-code-execution issues, but unauthenticated network reachability keeps this important. Mitigation focus: Upgrade to a vendor-supported OpenSSH package not affected by this issue.; Apply relevant OpenBSD, FreeBSD, Gentoo, NetApp, or device-vendor security updates.; Restrict SSH exposure to trusted networks, VPNs, or management allowlists..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CWE-400: Exact CWE lookup
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Open ATT&CK lookupCVE-2016-8858 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://security.netapp.com/advisory/ntap-20180201-0001/CVE reference, mitre
- https://github.com/openssh/openssh-portable/commit/ec165c392ca54317dbe3064a8c200de6531e89adCVE reference, mitre
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/013_ssh_kexinit.patch.sigCVE reference, mitre
- FreeBSD-SA-16:33CVE reference, mitre · vendor-advisory
- GLSA-201612-18CVE reference, mitre · vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1384860CVE reference, mitre
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdfCVE reference, mitre
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.