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CVE-2023-0897

28
FAUCET Score

CVE-2023-0897 is a critical session hijack vulnerability affecting Sielco PolyEco1000, PolyEco300, and PolyEco500 devices and their firmware. The flaw stems from a brute-forceable session cookie, lack of SSL, and session visibility in requests, allowing attackers to potentially gain full control over affected systems. With a CVSS score of 9.8 (Critical), this vulnerability is easily exploitable over the network with low attack complexity, leading to high impacts on confidentiality, integrity, and availability. Currently, there is no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.7.0CPE matchmatch criteria
cpe:2.3:o:sielco:polyeco500_firmware:1.7.0:*:*:*:cpu:*:*:*
10.16CPE matchmatch criteria
cpe:2.3:o:sielco:polyeco500_firmware:10.16:*:*:*:fpga:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:o:sielco:polyeco300_firmware:2.0.0:*:*:*:cpu:*:*:*
2.0.2CPE matchmatch criteria
cpe:2.3:o:sielco:polyeco300_firmware:2.0.2:*:*:*:cpu:*:*:*
10.19CPE matchmatch criteria
cpe:2.3:o:sielco:polyeco300_firmware:10.19:*:*:*:fpga:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.47%
Probability of exploitation in next 30 days
EPSS Percentile
38.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0047 is in the 15th percentile among its peer group of 36,835 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

No media coverage found for this CVE.

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

cisa.gov / news-events/ics-advisories/icsa-23-299-07
Third Party AdvisoryUS Government Resource