CVE-2019-8978

What it is

An improper authentication vulnerability can be exploited through a race condition that occurs in Ellucian Banner Web Tailor 8.8.3, 8.8.4, and 8.9 and Banner Enterprise Identity Services 8.3, 8.3.1, 8.3.2, and 8.4, in conjunction with SSO Manager. This vulnerability allows remote attackers to steal a victim's session (and cause a denial of service) by repeatedly requesting the initial Banner Web Tailor main page with the IDMSESSID cookie set to the victim's UDCID, which in the case tested is the institutional ID. During a login attempt by a victim, the attacker can leverage the race condition and will be issued the SESSID that was meant for this victim.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

5.9% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2019-02-20 00:00 UTC ReservedThe CVE id was reserved by its CNA
2. 2019-05-14 19:29 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-06-17 02:42 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 5.9% in the next 30 days (EPSS).
• Severity: 8.1 HIGH (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2019-05-14 19:29 UTC

Last modified

2026-06-17 02:42 UTC

Exploit probability

5.9% · EPSS, next 30 days

Weakness

CWE-287 · Improper authentication

Record status

Modified

Affected

• Ellucian Banner Enterprise Identity Services 8.3
• Ellucian Banner Enterprise Identity Services 8.3.1
• Ellucian Banner Enterprise Identity Services 8.3.2
• Ellucian Banner Enterprise Identity Services 8.4
• Ellucian Banner Web Tailor 8.8.3
• Ellucian Banner Web Tailor 8.8.4
• Ellucian Banner Web Tailor 8.9

Attack profile CVSS 3.0 · 8.1

Attack vector

Network

Complexity

High

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Is it in your code?

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