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

Affected product: Improper Restriction of Operations within the Bounds of a Memory Buffer

Unknown · Unknown

Official source article: Siemens SSA-676336 ↗. Check the applicable product and release in the original source.

6.2MediumCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 104 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Medium, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • EPSS is 1.10% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Unknown Unknown and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: As exposure requiresRemediation target: Within 365 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 104 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Alpine, Debian findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

7 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Alpine v3.23v3.23 · mainopensshVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.7.4_p1-r0Alpine Security Database ↗Source updated 22 Oct 2026
Alpine v3.22v3.22 · mainopensshVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.7.4_p1-r0Alpine Security Database ↗Source updated 21 Oct 2026
Alpine v3.21v3.21 · mainopensshVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.7.4_p1-r0Alpine Security Database ↗Source updated 21 Oct 2026
Debian trixietrixie · sourceopensshVendor fix publishedDebian records a fixed source-package version for this release.1:7.4p1-1Debian Security Tracker ↗Source updated 22 Oct 2026
Debian bookwormbookworm · sourceopensshVendor fix publishedDebian records a fixed source-package version for this release.1:7.4p1-1Debian Security Tracker ↗Source updated 22 Oct 2026
Debian forkyforky · sourceopensshVendor fix publishedDebian records a fixed source-package version for this release.1:7.4p1-1Debian Security Tracker ↗Source updated 22 Oct 2026
Debian sidsid · sourceopensshVendor fix publishedDebian records a fixed source-package version for this release.1:7.4p1-1Debian Security Tracker ↗Source updated 22 Oct 2026
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.

2 current
CVE-2016-10011 · CSAF 2.0 · revision 43 · interimSUSE Product Security TeamCVE-2016-10011
29 known affected

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

  • openssh as component of HPE Helion OpenStack 8
  • openssh-fips as component of HPE Helion OpenStack 8
  • openssh-helpers as component of HPE Helion OpenStack 8
  • openssh as component of SUSE Linux Enterprise High Performance Computing 12 SP2
  • openssh-fips as component of SUSE Linux Enterprise High Performance Computing 12 SP2
  • openssh-helpers as component of SUSE Linux Enterprise High Performance Computing 12 SP2
  • openssh as component of SUSE Linux Enterprise Server 11 SP4 LTSS
  • openssh as component of SUSE Linux Enterprise Server 12 SP2-BCL
  • openssh-fips as component of SUSE Linux Enterprise Server 12 SP2-BCL
  • openssh-helpers as component of SUSE Linux Enterprise Server 12 SP2-BCL
  • openssh as component of SUSE Linux Enterprise Server Teradata 12 SP3
  • openssh as component of SUSE OpenStack Cloud 8
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
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
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.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

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 actionPatch only the product branches with a verified fix

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 104 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
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-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 ↗
Canadian Centre for Cyber Security · English · AV17-039Multiple Apple security updates

3, CVE-2016-7924, CVE-2016-7925, CVE-2016-7926, CVE-2016-7927, CVE-2016-7928, CVE-2016-7929, CVE-2016-7930, CVE-2016-7931, CVE-2016-7932, CVE-2016-7933, CVE-2016-7934, CVE-2016-7935, CVE-2016-7936, CVE-2016-7937, CVE-2016-7938, CVE-2016-7939, CVE-2016-7940, CVE-2016-7973, CVE-2016-7974, CVE-2016-7975, CVE-2016-7983, CVE-2016-7984, CVE-2016-7985, CVE-2016-7986, CVE-2016-7992, CVE-2016-7993, CVE-2016-8574, CVE-2016-8575, CVE-2016-8740, CVE-2016-8743, CVE-2016-9533, CVE-2016-9535, CVE-2016-9536, CVE-2016-9537, CVE-2016-9538, CVE-2016-9539, CVE-2016-9540, CVE-2016-9586, CVE-2016-9642, CVE-2016-9643, CVE-2016-9935, CVE-2016-10009, CVE-2016-10010, CVE-2016-10011, CVE-2016-10012, CVE-2016-10158, CVE-2016-10159, CVE-2016-10160, CVE-2016-10161, CVE-2017-2364, CVE-2017-2367, CVE-2017-2376, CVE-2017-2377, CVE-2017-2378, CVE-2017-2379, CVE-2017-2380, CVE-2017-2381, CVE-2017-2382, CVE-2017-2384, CVE-2017-2385, CVE-2017-2386, CVE-2017-2389, CVE-2017-2390, CVE-2017-2391, CVE-2017-2392, CVE-2017-2393, CVE-2017-2394, CVE-2017-2395, CVE-2017-2396, CVE-2017-2397, CVE-2017-2398, CVE-2017-2399, CVE-2017-2400, CVE-2017-2401, CVE-2017-2402, CVE-2017-2403, CVE-2017-2404, CVE-2017-2405, CVE-2017-2406, CVE-2017-2407, CVE-2017-2408, CVE-2017-2409, CVE-2017-2410, CVE-2017-2412, CVE-2017-2413, CVE-2017-2414, CVE-2017-2415

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-1094Multiples vulnérabilités dans les produits Siemens

.org/CVERecord?id=CVE-2016-0705 Référence CVE CVE-2016-0777 https://www.cve.org/CVERecord?id=CVE-2016-0777 Référence CVE CVE-2016-0778 https://www.cve.org/CVERecord?id=CVE-2016-0778 Référence CVE CVE-2016-0797 https://www.cve.org/CVERecord?id=CVE-2016-0797 Référence CVE CVE-2016-0798 https://www.cve.org/CVERecord?id=CVE-2016-0798 Référence CVE CVE-2016-0799 https://www.cve.org/CVERecord?id=CVE-2016-0799 Référence CVE CVE-2016-0800 https://www.cve.org/CVERecord?id=CVE-2016-0800 Référence CVE CVE-2016-10009 https://www.cve.org/CVERecord?id=CVE-2016-10009 Référence CVE CVE-2016-10010 https://www.cve.org/CVERecord?id=CVE-2016-10010 Référence CVE CVE-2016-10011 https://www.cve.org/CVERecord?id=CVE-2016-10011 Référence CVE CVE-2016-10012 https://www.cve.org/CVERecord?id=CVE-2016-10012 Référence CVE CVE-2016-1907 https://www.cve.org/CVERecord?id=CVE-2016-1907 Référence CVE CVE-2016-1908 https://www.cve.org/CVERecord?id=CVE-2016-1908 Référence CVE CVE-2016-2105 https://www.cve.org/CVERecord?id=CVE-2016-2105 Référence CVE CVE-2016-2106 https://www.cve.org/CVERecord?id=CVE-2016-2106 Référence CVE CVE-2016-2107 https://www.cve.org/CVERecord?id=CVE-2016-2107 Référence CVE CVE-2016-2108 https://www.cve.org/CVERecord?id=CVE-2016-2108 Référence CVE CVE-2016-2109 https://www.cve.org/CVERecord?id=CVE-2016-2109

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-706Multiples vulnérabilités dans les produits Siemens

/ssa-756638.pdf Bulletin de sécurité Siemens ssa-835377 du 14 septembre 2021 https://cert-portal.siemens.com/productcert/pdf/ssa-835377.pdf Bulletin de sécurité Siemens ssa-847986 du 14 septembre 2021 https://cert-portal.siemens.com/productcert/pdf/ssa-847986.pdf Bulletin de sécurité Siemens ssa-944498 du 14 septembre 2021 https://cert-portal.siemens.com/productcert/pdf/ssa-944498.pdf Bulletin de sécurité Siemens ssa-987403 du 14 septembre 2021 https://cert-portal.siemens.com/productcert/pdf/ssa-987403.pdf Bulletin de sécurité Siemens ssa-997732 du 14 septembre 2021 https://cert-portal.siemens.com/productcert/pdf/ssa-997732.pdf Référence CVE CVE-2016-10011 https://www.cve.org/CVERecord?id=CVE-2016-10011 Référence CVE CVE-2016-10708 https://www.cve.org/CVERecord?id=CVE-2016-10708 Référence CVE CVE-2019-10941 https://www.cve.org/CVERecord?id=CVE-2019-10941 Référence CVE CVE-2020-36475 https://www.cve.org/CVERecord?id=CVE-2020-36475 Référence CVE CVE-2020-36478 https://www.cve.org/CVERecord?id=CVE-2020-36478 Référence CVE CVE-2020-7461 https://www.cve.org/CVERecord?id=CVE-2020-7461 Référence CVE CVE-2021-25665 https://www.cve.org/CVERecord?id=CVE-2021-25665 Référence CVE CVE-2021-27391 https://www.cve.org/CVERecord?id=CVE-2021-27391 Référence CVE CVE-2021-31891 https://www.cve.org/CVERecord?id=CV

Official advisory ↗
CERT-FR · French · CERTFR-2019-AVI-500Multiples vulnérabilités dans les produits Juniper

De multiples vulnérabilités ont été découvertes dans les produits Juniper. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service à distance, un contournement de la politique de sécurité et une atteinte à l'intégrité des données.

Official advisory ↗
CERT-FR · French · CERTFR-2018-AVI-487Multiples vulnérabilités dans les produits Juniper

De multiples vulnérabilités ont été découvertes dans les produits Juniper. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une exécution de code arbitraire et un déni de service à distance.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2016-006609OpenSSH の sshd の authfile.c における重要な秘密鍵の情報を取得される脆弱性

OpenSSH の sshd の authfile.c は、バッファのコンテンツ上の realloc の効果を適切に考慮しないため、重要な秘密鍵の情報を取得される脆弱性が存在します。

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.
Fix availability varies by product
Affected
Fixed
Update to V5.5.2 or later version
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
Official vendor articles1 stored document

Linked articles are downloaded and versioned as source evidence. A CVE mention or approved update relationship does not, by itself, verify a fix for every product branch.

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 · SUSE Product Security Team
Remediation sourceVendor CSAF · SUSE Product Security Team
CWE sourceCISA ADP
NVD statusNVD modified after enrichment

Missing structured fields: affected product. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗
  1. 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 ↗
  2. Vendor guidanceAuthoritative vendor guidance changed: added patch: github.com/ac8147a06ed2e2403fb6b9a0c03e618a9333c0e9; added remediation: github.com/ac8147a06ed2e2403fb6b9a0c03e618a9333c0e9; removed vendor advisory: access.redhat.com/RHSA-2017:2029.
    Before
    vendor advisory: access.redhat.com/RHSA-2017:2029
    After
    patch: github.com/ac8147a06ed2e2403fb6b9a0c03e618a9333c0e9 · remediation: github.com/ac8147a06ed2e2403fb6b9a0c03e618a9333c0e9
    github.com ↗
  3. 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 ↗
  4. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    github.com ↗
  5. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
  6. Affected versionsThe structured affected or fixed version information changed.
    Before
    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.
    After
    n/a · Fixed: Update to V5.5.2 or later version
    Siemens ProductCERT ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2016-1208↗Vendor CSAF · SUSE Product Security Team↗Siemens ProductCERT security advisory · Siemens SSA-676336↗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