CVE-2020-11561

CVE-2020-11561 is a high-severity vulnerability in Nchsoftware Express Invoice with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-425.

Key facts

Description

In NCH Express Invoice 7.25, an authenticated low-privilege user can enter a crafted URL to access higher-privileged functionalities such as the "Add New Item" screen.

Frequently asked questions

What is CVE-2020-11561?
In NCH Express Invoice 7.25, an authenticated low-privilege user can enter a crafted URL to access higher-privileged functionalities such as the "Add New Item" screen.
How severe is CVE-2020-11561?
CVE-2020-11561 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-11561 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11561?
CVE-2020-11561 affects Nchsoftware Express Invoice. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-11561?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-11561 published?
CVE-2020-11561 was published on 2020-04-07 and last updated on 2026-06-17.

References

Affected products (1)

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