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Full vulnerability report · 2017
CVE-2016-10011High confidence

n/a: Improper Restriction of Operations within the Bounds of a Memory Buffer

n/a · n/a

6.2MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
SSA-676336 · CSAF 2.0 · revision 3 · interimSiemens ProductCERTSSA-676336: OpenSSH Vulnerabilities in SCALANCE X-200 and X-300/X408 Switches
104 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SCALANCE X200-4P IRT (6GK5200-4AH00-2BA3)
  • SCALANCE X201-3P IRT (6GK5201-3BH00-2BA3)
  • SCALANCE X201-3P IRT PRO (6GK5201-3JR00-2BA6)
  • SCALANCE X202-2IRT (6GK5202-2BB00-2BA3)
  • SCALANCE X202-2P IRT (6GK5202-2BH00-2BA3)
  • SCALANCE X202-2P IRT PRO (6GK5202-2JR00-2BA6)
  • SCALANCE X204-2 (6GK5204-2BB10-2AA3)
  • SCALANCE X204-2FM (6GK5204-2BB11-2AA3)
  • SCALANCE X204-2LD (6GK5204-2BC10-2AA3)
  • SCALANCE X204-2LD TS (6GK5204-2BC10-2CA2)
  • SCALANCE X204-2TS (6GK5204-2BB10-2CA2)
  • SCALANCE X204IRT (6GK5204-0BA00-2BA3)
Summary
authfile.c in sshd in OpenSSH before 7.4 does not properly consider the effects of realloc on buffer contents, which might allow local users to obtain sensitive private-key information by leveraging access to a privilege-separated child process.
Remediation
Update to V5.5.2 or later version
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2016-1208

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

authfile.c in sshd in OpenSSH before 7.4 does not properly consider the effects of realloc on buffer contents, which might allow local users to obtain sensitive private-key information by leveraging access to a privilege-separated child process.

What

authfile.c in sshd in OpenSSH before 7.4 does not properly consider the effects of realloc on buffer contents, which might allow local users to obtain sensitive private-key information by leveraging access to a privilege-separated child process.

Why

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

How

An attacker operating through local access may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

authfile.c in sshd in OpenSSH before 7.4 does not properly consider the effects of realloc on buffer contents, which might allow local users to obtain sensitive private-key information by leveraging access to a privilege-separated child process.

Why

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

How

An attacker operating through local access may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Improper Restriction of Operations within the Bounds of a Memory Buffer → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-119 ↗

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer. The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
UnauthenticatedCWE-119
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-W-2023-1996OpenSSH: Mehrere Schwachstellen

Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in OpenSSH ausnutzen, um beliebigen Programmcode mit den Rechten des Dienstes auszuführen, seine Privilegien zu erweitern oder einen Denial of Service Angriff durchzuführen.

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
SCALANCE X200-4P IRT (6GK5200-4AH00-2BA3); SCALANCE X201-3P IRT (6GK5201-3BH00-2BA3); SCALANCE X201-3P IRT PRO (6GK5201-3JR00-2BA6); SCALANCE X202-2IRT (6GK5202-2BB00-2BA3); SCALANCE X202-2P IRT (6GK5202-2BH00-2BA3); SCALANCE X202-2P IRT PRO (6GK5202-2JR00-2BA6); SCALANCE X204-2 (6GK5204-2BB10-2AA3); SCALANCE X204-2FM (6GK5204-2BB11-2AA3); SCALANCE X204-2LD (6GK5204-2BC10-2AA3); SCALANCE X204-2LD TS (6GK5204-2BC10-2CA2); SCALANCE X204-2TS (6GK5204-2BB10-2CA2); SCALANCE X204IRT (6GK5204-0BA00-2BA3); SCALANCE X204IRT PRO (6GK5204-0JA00-2BA6); SCALANCE X206-1 (6GK5206-1BB10-2AA3); SCALANCE X206-1LD (6GK5206-1BC10-2AA3); SCALANCE X208 (incl. SIPLUS NET variant); SCALANCE X208PRO (6GK5208-0HA10-2AA6); SCALANCE X212-2 (incl. SIPLUS NET variant); SCALANCE X212-2LD (6GK5212-2BC00-2AA3); SCALANCE X216 (6GK5216-0BA00-2AA3); SCALANCE X224 (6GK5224-0BA00-2AA3); SCALANCE X302-7 EEC (230V, coated) (6GK5302-7GD00-3GA3); SCALANCE X302-7 EEC (230V) (6GK5302-7GD00-3EA3); SCALANCE X302-7 EEC (24V, coated) (6GK5302-7GD00-1GA3); SCALANCE X302-7 EEC (24V) (6GK5302-7GD00-1EA3); SCALANCE X302-7 EEC (2x 230V, coated) (6GK5302-7GD00-4GA3); SCALANCE X302-7 EEC (2x 230V) (6GK5302-7GD00-4EA3); SCALANCE X302-7 EEC (2x 24V, coated) (6GK5302-7GD00-2GA3); SCALANCE X302-7 EEC (2x 24V) (6GK5302-7GD00-2EA3); SCALANCE X304-2FE (6GK5304-2BD00-2AA3); and 74 more
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Update to V5.5.2 or later version
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 5 Jan 2017 · Last source change 29 May 2026, 20:19 UTC · CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

CVE recordCVE.org · 5.2
CVSS sourceCISA ADP
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-01
European sourceENISA EUVD · EUVD-2016-1208
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceCISA ADP
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →
  1. Vendor guidanceAuthoritative vendor guidance changed from vendor advisory to authoritative remediation link · patch.
    Before
    vendor advisory
    After
    authoritative remediation link · patch
    af854a3a-2127-422b-91ae-364da2661108 ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    n/a · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    n/a · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
  3. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    af854a3a-2127-422b-91ae-364da2661108 ↗
  4. ENISA EUVD mappingEUVD-2016-1208 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2016-1208"}
    ENISA EUVD ↗
  5. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2016-1208↗Vendor CSAF · Siemens ProductCERT↗Patch or update reference↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2016-10011 · cve.blacktree.nl