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» CVE-2016-0856
Multiple stack-based buffer overflows in Advantech WebAccess before 8.1 allow remote attackers to execute arbitrary code via unspecified vectors.
NVD Status： Modified ，CVE State: published
Threat Intelligence & Risk Assessment for CVE-2016-0856
Conclusion & alert: CVE-2016-0856 is rated High Risk (68.5/100) : CVSS Critical severity, with high exploitation likelihood (EPSS 51.47%, 98th percentile).Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term.Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
Exploit prediction scoring system (EPSS) score for CVE-2016-0856
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
#
Date
Old EPSS score
New EPSS score
Delta (New - Old)
1
2026-04-23
60.94%
51.47%
-9.47%
2
2025-03-30
42.26%
60.94%
+18.68%
3
2025-03-29
—
42.26%
—
Full EPSS history
(15 records total)
Common vulnerability scoring system (CVSS) metrics for CVE-2016-0856
CVSS metrics for this CVE.
Base score
Version
Severity
Vector
Exploitability
Impact
Score source
9.8
3.0
CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
3.9
5.9
[email protected]
10.0
2.0
HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C
Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
10.0
10.0
[email protected]
Weakness enumeration for CVE-2016-0856
Affected software / configurations for CVE-2016-0856
Vendor
Product
Version
Raw CPE
advantech
webaccess
<= 8.0
cpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*
References for CVE-2016-0856
cvelogic
Threat Intelligence