How severe is CVE-2023-0897?

CVE-2023-0897 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-0897 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-0897?

CVE-2023-0897 primarily affects Sielco Polyeco500 Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-0897?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-0897 published?

CVE-2023-0897 was published on 2023-10-26 and last updated on 2026-06-17.

CVE-2023-0897

CVE-2023-0897 is a high-severity vulnerability in Sielco Polyeco500 Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-384.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-384
Affected product: Sielco Polyeco500 Firmware
Published: 2023-10-26
Last modified: 2026-06-17

Description

Sielco PolyEco1000 is vulnerable to a session hijack vulnerability due to the cookie being vulnerable to a brute force attack, lack of SSL, and the session being visible in requests.

Frequently asked questions

What is CVE-2023-0897?: Sielco PolyEco1000 is vulnerable to a session hijack vulnerability due to the cookie being vulnerable to a brute force attack, lack of SSL, and the session being visible in requests.
How severe is CVE-2023-0897?: CVE-2023-0897 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-0897 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-0897?: CVE-2023-0897 primarily affects Sielco Polyeco500 Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-0897?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-0897 published?: CVE-2023-0897 was published on 2023-10-26 and last updated on 2026-06-17.

References

https://www.cisa.gov/news-events/ics-advisories/icsa-23-299-07

Affected products (9)

cpe:2.3:o:sielco:polyeco500_firmware:1.7.0:*:*:*:cpu:*:*:*
cpe:2.3:o:sielco:polyeco500_firmware:10.16:*:*:*:fpga:*:*:*
cpe:2.3:o:sielco:polyeco300_firmware:2.0.0:*:*:*:cpu:*:*:*
cpe:2.3:o:sielco:polyeco300_firmware:2.0.2:*:*:*:cpu:*:*:*
cpe:2.3:o:sielco:polyeco300_firmware:10.19:*:*:*:fpga:*:*:*
cpe:2.3:o:sielco:polyeco1000_firmware:1.9.3:*:*:*:cpu:*:*:*
cpe:2.3:o:sielco:polyeco1000_firmware:1.9.4:*:*:*:cpu:*:*:*
cpe:2.3:o:sielco:polyeco1000_firmware:2.0.6:*:*:*:cpu:*:*:*
cpe:2.3:o:sielco:polyeco1000_firmware:10.19:*:*:*:fpga:*:*:*

More vulnerabilities in Sielco Polyeco500 Firmware

CVE-2023-46665 — Critical (CVSS 9.8): Sielco PolyEco1000 is vulnerable to an authentication bypass vulnerability due to an attacker modifying passwords in a…
CVE-2023-46661 — Critical (CVSS 9.8): Sielco PolyEco1000 is vulnerable to an attacker escalating their privileges by modifying passwords in POST requests.
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CVE-2023-46663 — High (CVSS 7.5): Sielco PolyEco1000 is vulnerable to an attacker bypassing authorization and accessing resources behind protected pages.…
CVE-2023-46662 — High (CVSS 7.5): Sielco PolyEco1000 is vulnerable to an information disclosure vulnerability due to improper access control enforcement.…

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