CVE-2021-42777
CVE-2021-42777 is a critical-severity vulnerability in Stimulsoft Reports with a CVSS 3.x base score of 9.8. 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-209.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 1% (57th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-209
- Affected product: Stimulsoft Reports
- Published:
- Last modified:
Description
Stimulsoft (aka Stimulsoft Reports) 2013.1.1600.0, when Compilation Mode is used, allows an attacker to execute arbitrary C# code on any machine that renders a report, including the application server or a user's local machine, as demonstrated by System.Diagnostics.Process.Start.
Frequently asked questions
- What is CVE-2021-42777?
- Stimulsoft (aka Stimulsoft Reports) 2013.1.1600.0, when Compilation Mode is used, allows an attacker to execute arbitrary C# code on any machine that renders a report, including the application server or a user's local machine, as demonstrated by System.Diagnostics.Process.Start.
- How severe is CVE-2021-42777?
- CVE-2021-42777 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-42777 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-42777?
- CVE-2021-42777 affects Stimulsoft Reports. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-42777?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2021-42777 published?
- CVE-2021-42777 was published on 2022-10-29 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:stimulsoft:reports:2013.1.1600.0:*:*:*:*:*:*:*
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