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CVE-2018-11741

52
FAUCET Score

CVE-2018-11741 describes a critical vulnerability in NEC Univerge Sv9100 WebPro 6.00.00 devices, allowing for account information disclosure due to predictable session IDs. This flaw enables unauthorized access to sensitive data through manipulated URIs. With a CVSS score of 9.8 (CRITICAL), this vulnerability is easily exploitable over the network with low complexity and no user interaction, leading to complete compromise of confidentiality, integrity, and availability. Its high EPSS and FAUCET Risk Score further emphasize its severe potential impact. While not listed on the KEV catalog or experiencing widespread community discussion or media coverage, an exploit for predictable session IDs and cleartext password storage is publicly available on ExploitDB. There is no evidence of active exploitation in the wild.

Impacted Technologies

VendorProductVersion(s)CPE
6.00.00CPE matchmatch criteria
cpe:2.3:o:nec:univerge_sv9100_webpro_firmware:6.00.00:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
17.89%
Probability of exploitation in next 30 days
EPSS Percentile
96.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-45942 · Dec 4, 2018
This CVE's current EPSS score of 0.1789 is in the 93rd percentile among its peer group of 36,862 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

hyp3rlinx.altervista.org / advisories/NEC-UNIVERGE-WEBPRO-v6.00-PREDICTABLE-SESSIONID-CLEARTEXT-PASSWORDS.txt
ExploitThird Party Advisory
packetstormsecurity.com / files/150610/NEC-Univerge-Sv9100-WebPro-6.00.00-Predictable-Session-ID-Cleartext-Passwords.html
ExploitThird Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2018/Dec/1
ExploitMailing ListThird Party Advisory
exploit-db.com / exploits/45942
ExploitThird Party AdvisoryVDB Entry