How severe is CVE-2018-11741?

CVE-2018-11741 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-11741 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11741?

CVE-2018-11741 affects Nec Univerge Sv9100 Webpro Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-11741?

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

When was CVE-2018-11741 published?

CVE-2018-11741 was published on 2018-12-26 and last updated on 2026-06-17.

CVE-2018-11741

CVE-2018-11741 is a critical-severity vulnerability in Nec Univerge Sv9100 Webpro Firmware with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 18% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-200.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 18% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Nec Univerge Sv9100 Webpro Firmware
Published: 2018-12-26
Last modified: 2026-06-17

Description

NEC Univerge Sv9100 WebPro 6.00.00 devices have Predictable Session IDs that result in Account Information Disclosure via Home.htm?sessionId=#####&GOTO(8) URIs.

Frequently asked questions

What is CVE-2018-11741?: NEC Univerge Sv9100 WebPro 6.00.00 devices have Predictable Session IDs that result in Account Information Disclosure via Home.htm?sessionId=#####&GOTO(8) URIs.
How severe is CVE-2018-11741?: CVE-2018-11741 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-11741 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11741?: CVE-2018-11741 affects Nec Univerge Sv9100 Webpro Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-11741?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-11741 published?: CVE-2018-11741 was published on 2018-12-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:nec:univerge_sv9100_webpro_firmware:6.00.00:*:*:*:*:*:*:*

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