CVE-2020-5616

Name: CVE-2020-5616
Creator: NVD / NIST
Published: 2020-08-04T02:15:11.657+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.06%

Last modified Jun 17, 2026

CVE-2020-5616 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. [Calendar01], [Calendar02], [PKOBO-News01], [PKOBO-vote01], [Telop01], [Gallery01], [CalendarForm01], and [Link01] [Calendar01] free edition ver1.0.0, [Calendar02] free edition ver1.0.0, [PKOBO-News01] free edition ver1.0.3 and earlier, [PKOBO-vote01] free edition ver1.0.1 and earlier, [Telop01] free edition ver1.0.0, [Gallery01] free edition ver1.0.3 and earlier, [CalendarForm01] free edition ver1.0.3 and earlier, and [Link01] free edition ver1.0.0 allows remote attackers to bypass authentication and log in to the product with administrative privileges via unspecified vectors.. EPSS estimates a 3.06% chance of exploitation in the next 30 days.

Description

[Calendar01], [Calendar02], [PKOBO-News01], [PKOBO-vote01], [Telop01], [Gallery01], [CalendarForm01], and [Link01] [Calendar01] free edition ver1.0.0, [Calendar02] free edition ver1.0.0, [PKOBO-News01] free edition ver1.0.3 and earlier, [PKOBO-vote01] free edition ver1.0.1 and earlier, [Telop01] free edition ver1.0.0, [Gallery01] free edition ver1.0.3 and earlier, [CalendarForm01] free edition ver1.0.3 and earlier, and [Link01] free edition ver1.0.0 allows remote attackers to bypass authentication and log in to the product with administrative privileges via unspecified vectors.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

3.06%

85.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Calendar01 Project	Calendar01	1.0.0
Calendar02 Project	Calendar02	1.0.0
Calendarform01 Project	Calendarform01	<= 1.0.3
Gallery01 Project	Gallery01	<= 1.0.3
Link01 Project	Link01	1.0.0
Pkobo-News01 Project	Pkobo-News01	<= 1.0.3
Pkobo-Vote01 Project	Pkobo-Vote01	<= 1.0.1
Telop01 Project	Telop01	1.0.0

References

https://jvn.jp/en/jp/JVN73169744/index.htmlThird Party Advisory
https://www.php-factory.net/calendar/01.phpProduct, Third Party Advisory
https://www.php-factory.net/calendar/02.phpProduct, Third Party Advisory
https://www.php-factory.net/calendar_form/01.phpProduct, Third Party Advisory
https://www.php-factory.net/gallery/01.phpProduct, Third Party Advisory
https://www.php-factory.net/link/01.phpProduct, Third Party Advisory
https://www.php-factory.net/news/pkobo-news01.phpProduct, Third Party Advisory
https://www.php-factory.net/telop/01.phpProduct, Third Party Advisory
https://www.php-factory.net/vote/01.phpProduct, Third Party Advisory
https://jvn.jp/en/jp/JVN73169744/index.htmlThird Party Advisory
https://www.php-factory.net/calendar/01.phpProduct, Third Party Advisory
https://www.php-factory.net/calendar/02.phpProduct, Third Party Advisory
https://www.php-factory.net/calendar_form/01.phpProduct, Third Party Advisory
https://www.php-factory.net/gallery/01.phpProduct, Third Party Advisory
https://www.php-factory.net/link/01.phpProduct, Third Party Advisory
https://www.php-factory.net/news/pkobo-news01.phpProduct, Third Party Advisory
https://www.php-factory.net/telop/01.phpProduct, Third Party Advisory
https://www.php-factory.net/vote/01.phpProduct, Third Party Advisory

Timeline

Published: Aug 4, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-5616?

How severe is CVE-2020-5616?

CVE-2020-5616 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.06% probability of exploitation in the next 30 days.

How do I fix CVE-2020-5616?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-5616?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST