CVE-2022-40319

Listserv vulnerability

CVSS

7.5

EPSS

7.2%

EPSS pct

94th

Exploited

No known

The LISTSERV 17 web interface allows remote attackers to conduct Insecure Direct Object References (IDOR) attacks via a modified email address in a wa.exe URL. The impact is unauthorized modification of a victim's LISTSERV account.

Affected vendor

Lsoft

Affected product

Listserv

CVSS vector

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

Weakness type (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

Published

2023-01-17

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to integrity.

Its EPSS score of 7.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 94% of all scored CVEs.

Check your external exposure to CVE-2022-40319

Confirm whether Lsoft Listserv is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2022-40319.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2022-40319

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2022-40319 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2022-40319?

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