Security readout for executives and security teams
This OpenSSH issue lets an already authenticated SSH user bypass intended shell-command restrictions through crafted X11 forwarding data. It is not a remote unauthenticated takeover, but it matters where SSH accounts are deliberately constrained, such as automation, jump hosts, or limited shell access. Exposure is likely on systems running OpenSSH before 7.2p2, or vendor packages without the relevant backport, where authenticated SSH users can request X11 forwarding and have restricted command enforcement. Treat as a targeted access-control risk, not an internet-wide emergency. Prioritize bastion hosts, shared servers, automation accounts, and environments granting limited SSH access to third parties or semi-trusted users. Mitigation focus: Upgrade OpenSSH to 7.2p2 or a vendor package containing the CVE-2016-3115 fix.; Apply distribution advisories from Red Hat, FreeBSD, Fedora, Oracle, Gentoo, or Debian where applicable.; Disable X11 forwarding where it is not operationally required..
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
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ATT&CK lookup starting points
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CWE-93: Exact CWE lookup
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Open ATT&CK lookupCVE-2016-3115 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
- Medium
- CVSS
- 6.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
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:L/UI:N/S:C/C:L/I:L/A:N3.12.7CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
6.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
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://github.com/tintinweb/pub/tree/master/pocs/cve-2016-3115CVE reference, mitre · x_refsource_MISC
- FreeBSD-SA-16:14CVE reference, mitre · vendor-advisory, x_refsource_FREEBSD
- 39569CVE reference, mitre · exploit, x_refsource_EXPLOIT-DB
- https://bto.bluecoat.com/security-advisory/sa121CVE reference, mitre · x_refsource_CONFIRM
- GLSA-201612-18CVE reference, mitre · vendor-advisory, x_refsource_GENTOO
- [debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security updateCVE reference, mitre · mailing-list, x_refsource_MLIST
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.
Improper Neutralization of CRLF Sequences ('CRLF Injection')
Improper Neutralization of CRLF Sequences ('CRLF Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.