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Full vulnerability report · 2022
CVE-2016-3709High confidence

Possible cross-site scripting vulnerability in libxml after commit 960f0e2

n/a · libxml2

6.1MediumCVSS 3.1
Recommended action
Within 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

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-398330 · CSAF 2.0 · revision 18 · interimSiemens ProductCERTSSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5
5 known affected

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

  • SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
  • SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)
  • SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)
Summary
Possible cross-site scripting vulnerability in libxml after commit 960f0e2.
Remediation
Update to V3.1.5 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-2016-4730

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 actionWithin 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

Possible cross-site scripting vulnerability in libxml after commit 960f0e2.

What

Possible cross-site scripting vulnerability in libxml after commit 960f0e2.

Why

Attacker-controlled content can reach a browser as executable script without sufficient output encoding or sanitisation.

How

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

What

Possible cross-site scripting vulnerability in libxml after commit 960f0e2.

Why

Attacker-controlled content can reach a browser as executable script without sufficient output encoding or sanitisation.

How

An attacker operating through a network path may attempt exploitation without authentication after a 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.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
a network path → Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-79 ↗

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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

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

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SChangedScope: The attack can affect a component governed by a different security authority.CLowConfidentiality impact: A successful attack can cause a limited loss.ILowIntegrity impact: A successful attack can cause a limited loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-79Public exploit reference
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2023-1614Tenable Security Nessus Network Monitor: Mehrere Schwachstellen

Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in Tenable Security Nessus Network Monitor ausnutzen, um beliebigen Code auszuführen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand auszulösen und Daten zu manipulieren.

Official advisory
BSI · German · WID-SEC-W-2022-0869libxml2: Schwachstelle ermöglicht Cross-Site Scripting

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in libxml2 ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen.

Official advisory
CERT-FR · French · CERTFR-2023-AVI-1015Multiples vulnérabilités dans les produits Siemens

Siemens SSA-999588 du 12 décembre 2023 https://cert-portal.siemens.com/productcert/html/ssa-398330.html Référence CVE CVE-2013-0340 https://www.cve.org/CVERecord?id=CVE-2013-0340 Référence CVE CVE-2013-4235 https://www.cve.org/CVERecord?id=CVE-2013-4235 Référence CVE CVE-2014-7209 https://www.cve.org/CVERecord?id=CVE-2014-7209 Référence CVE CVE-2015-20107 https://www.cve.org/CVERecord?id=CVE-2015-20107 Référence CVE CVE-2016-10228 https://www.cve.org/CVERecord?id=CVE-2016-10228 Référence CVE CVE-2016-10739 https://www.cve.org/CVERecord?id=CVE-2016-10739 Référence CVE CVE-2016-3189 https://www.cve.org/CVERecord?id=CVE-2016-3189 Référence CVE CVE-2016-3709 https://www.cve.org/CVERecord?id=CVE-2016-3709 Référence CVE CVE-2016-4658 https://www.cve.org/CVERecord?id=CVE-2016-4658 Référence CVE CVE-2016-5131 https://www.cve.org/CVERecord?id=CVE-2016-5131 Référence CVE CVE-2016-9318 https://www.cve.org/CVERecord?id=CVE-2016-9318 Référence CVE CVE-2017-0663 https://www.cve.org/CVERecord?id=CVE-2017-0663 Référence CVE CVE-2017-16931 https://www.cve.org/CVERecord?id=CVE-2017-16931 Référence CVE CVE-2017-16932 https://www.cve.org/CVERecord?id=CVE-2017-16932 Référence CVE CVE-2017-17512 https://www.cve.org/CVERecord?id=CVE-2017-17512 Référence CVE CVE-2017-18258 https://www.cve.org/CVERecord?id=CVE-2017-

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0499Multiples vulnérabilités dans Tenable Nessus Network Monitor

.cve.org/CVERecord?id=CVE-2016-1836 Référence CVE CVE-2016-1837 https://www.cve.org/CVERecord?id=CVE-2016-1837 Référence CVE CVE-2016-1838 https://www.cve.org/CVERecord?id=CVE-2016-1838 Référence CVE CVE-2016-1839 https://www.cve.org/CVERecord?id=CVE-2016-1839 Référence CVE CVE-2016-1840 https://www.cve.org/CVERecord?id=CVE-2016-1840 Référence CVE CVE-2016-2073 https://www.cve.org/CVERecord?id=CVE-2016-2073 Référence CVE CVE-2016-3189 https://www.cve.org/CVERecord?id=CVE-2016-3189 Référence CVE CVE-2016-3627 https://www.cve.org/CVERecord?id=CVE-2016-3627 Référence CVE CVE-2016-3705 https://www.cve.org/CVERecord?id=CVE-2016-3705 Référence CVE CVE-2016-3709 https://www.cve.org/CVERecord?id=CVE-2016-3709 Référence CVE CVE-2016-4447 https://www.cve.org/CVERecord?id=CVE-2016-4447 Référence CVE CVE-2016-4448 https://www.cve.org/CVERecord?id=CVE-2016-4448 Référence CVE CVE-2016-4449 https://www.cve.org/CVERecord?id=CVE-2016-4449 Référence CVE CVE-2016-4483 https://www.cve.org/CVERecord?id=CVE-2016-4483 Référence CVE CVE-2016-4607 https://www.cve.org/CVERecord?id=CVE-2016-4607 Référence CVE CVE-2016-4609 https://www.cve.org/CVERecord?id=CVE-2016-4609 Référence CVE CVE-2016-4658 https://www.cve.org/CVERecord?id=CVE-2016-4658 Référence CVE CVE-2016-5131 https://www.cve.org/CVERecord?id=CVE-2016-5131 Ré

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
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0); SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0); SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0); SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0); SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
Update to V3.1.5 or later version
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 28 Jul 2022 · Last source change 4 Nov 2025, 16:09 UTC · CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2016-4730
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceCNA
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 →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2016-4730↗Vendor CSAF · Siemens ProductCERT↗Public exploit 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-2016-3709 · cve.blacktree.nl