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CVE-2016-0857

45
FAUCET Score

CVE-2016-0857 describes multiple heap-based buffer overflows in Advantech WebAccess versions prior to 8.1, allowing remote attackers to execute arbitrary code. This vulnerability carries a critical CVSS score of 9.8, indicating a network-exploitable flaw with low attack complexity and complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, highlighting its potential impact despite its inactive status on the CISA KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.0CPE matchmatch criteria
cpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
28.18%
Probability of exploitation in next 30 days
EPSS Percentile
97.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.2818 is in the 95th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

ics-cert.us-cert.gov / advisories/ICSA-16-014-01
Third Party AdvisoryUS Government Resource
zerodayinitiative.com / advisories/ZDI-16-107
zerodayinitiative.com / advisories/ZDI-16-119
zerodayinitiative.com / advisories/ZDI-16-121