CVE-2018-11741

CRITICALNVD 9.89.8—Elevated

9.8

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.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 97.8%
KEV: Not listed

Published

December 26, 2018

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Jun 6, 2026

🔬 Proof of concept available. No patch confirmed yet.

generic🟡 PoC Available

NEC Univerge Sv9100 WebPro - 6.00 - Predictable Session ID / Clear Text Password Storage - Hardware webapps Exploit

https://www.exploit-db.com/exploits/45942/

generic

Full Disclosure: CVE-2018-11741 / CVE-2018-11742 / NEC Univerge Sv9100 WebPro - 6.00 / Predictable Session ID / Clear Text Password Storage

http://seclists.org/fulldisclosure/2018/Dec/1

generic

http://hyp3rlinx.altervista.org/advisories/NEC-UNIVERGE-WEBPRO-v6.00-PREDICTABLE-SESSIONID-CLEARTEXT-PASSWORDS.txt

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-06 13:45 UTCepss_batch
2026-06-06 13:45 UTCepss_batch
2026-06-05 22:45 UTCepss_batch
2026-06-05 22:44 UTCepss_batch
2026-06-05 06:08 UTCepss_batch
2026-06-05 06:08 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:49 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:28 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 23:56 UTCEG score recompute
2026-05-27 23:56 UTCGHSA enrichment

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-45942
First seen Dec 4, 2018
NEC Univerge Sv9100 WebPro - 6.00 - Predictable Session ID / Clear Text Password Storage
Open source ↗

Frequently asked(5)

What is CVE-2018-11741?

CVE-2018-11741 is a critical vulnerability published on December 26, 2018. 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.

When was CVE-2018-11741 disclosed?

CVE-2018-11741 was first published in the National Vulnerability Database on December 26, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-11741 actively exploited?

CVE-2018-11741 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 97.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-11741?

CVE-2018-11741 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2018-11741?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-11741, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2018-11741

📅 Published

🔄 Last Modified

📋 Advisory Details (3)