How severe is CVE-2026-25085?

CVE-2026-25085 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2026-25085 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-2026-25085?

CVE-2026-25085 primarily affects Copeland Xweb 500b Pro Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-25085?

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.

Does CVE-2026-25085 have an EU (EUVD) identifier?

Yes. CVE-2026-25085 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8954.

When was CVE-2026-25085 published?

CVE-2026-25085 was published on 2026-02-27 and last updated on 2026-06-17.

CVE-2026-25085

CVE-2026-25085 is a high-severity vulnerability in Copeland Xweb 500b Pro Firmware with a CVSS 3.x base score of 8.6. 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-394.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8954
Weakness: CWE-394
Affected product: Copeland Xweb 500b Pro Firmware
Published: 2026-02-27
Last modified: 2026-06-17

Description

A vulnerability exists in Copeland XWEB Pro version 1.12.1 and prior, in which an unexpected return value from the authentication routine is later on processed as a legitimate value, resulting in an authentication bypass.

Frequently asked questions

What is CVE-2026-25085?: A vulnerability exists in Copeland XWEB Pro version 1.12.1 and prior, in which an unexpected return value from the authentication routine is later on processed as a legitimate value, resulting in an authentication bypass.
How severe is CVE-2026-25085?: CVE-2026-25085 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2026-25085 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-2026-25085?: CVE-2026-25085 primarily affects Copeland Xweb 500b Pro Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-25085?: 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.
Does CVE-2026-25085 have an EU (EUVD) identifier?: Yes. CVE-2026-25085 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8954.
When was CVE-2026-25085 published?: CVE-2026-25085 was published on 2026-02-27 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:copeland:xweb_500b_pro_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:copeland:xweb_300d_pro_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:copeland:xweb_500d_pro_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Copeland Xweb 500b Pro Firmware

CVE-2026-21718 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in Copeland XWEB Pro version 1.12.1 and prior, enabling any attackers to…
CVE-2026-24663 — Critical (CVSS 9.0): An OS command injection vulnerability exists in XWEB Pro version 1.12.1 and prior, enabling an unauthenticated…
CVE-2026-3037 — High (CVSS 8.0): An OS command injection vulnerability exists in XWEB Pro version 1.12.1 and prior, enabling an authenticated attacker…
CVE-2026-25721 — High (CVSS 8.0): An OS command injection vulnerability exists in XWEB Pro version 1.12.1 and prior, enabling an authenticated attacker…
CVE-2026-25196 — High (CVSS 8.0): An OS command injection vulnerability exists in XWEB Pro version 1.12.1 and prior, enabling an authenticated attacker…
CVE-2026-25105 — High (CVSS 8.0): An OS command injection vulnerability exists in XWEB Pro version 1.12.1 and prior, enabling an authenticated…

All CVEs affecting Copeland Xweb 500b Pro Firmware →

Other CWE-394 vulnerabilities

CVE-2025-12516 — Critical (CVSS 9.8): Lack of Graceful Error Handling - HTTP 5xx ErrorThis issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5 .
CVE-2025-12515 — Critical (CVSS 9.8): Systemic Internal Server Errors - HTTP 500 ResponseThis issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5 .
CVE-2019-0066 — High (CVSS 7.5): An unexpected status return value weakness in the Next-Generation Multicast VPN (NG-mVPN) service of Juniper Networks…
CVE-2025-23013 — High (CVSS 7.3): In Yubico pam-u2f before 1.3.1, local privilege escalation can sometimes occur. This product implements a Pluggable…
CVE-2025-48510 — High (CVSS 7.1): Improper return value within AMD uProf can allow a local attacker to bypass KSLR, potentially resulting in loss of…
CVE-2025-22854 — Medium (CVSS 6.9): Improper handling of non-200 http responses in the PingFederate Google Adapter leads to thread exhaustion under…

Browse all CWE-394 vulnerabilities →