6.5

CVE-2020-8866: debian debian_linux

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2020-8866DEBIAN-CVE-2020-8866DLA-2162-1
Published 23-03-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-8866 is a medium (CVSS 6.5) vulnerability in debian debian_linux. EPSS estimates a 9.58% chance of exploitation in the next 30 days, higher than 95.4% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
38/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
9.58%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2exploit-database

Timeline

  1. 23-03-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within add.php. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10125.

CVSS metrics

7 scores · 4 sources · 3 versions

EPSS trend

Probability

9.58%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

0.00 pp

From 9.58% on 19-09-2026

19-09-202619-10-2026
EPSS score
9.58%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • exploit-databasephpUnverified

    Horde Groupware Webmail Edition 5.2.22 - PHAR Loading

    Maturity: poc

  • exploit-databasephpUnverified

    Horde Groupware Webmail Edition 5.2.22 - PHP File Inclusion

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Horde3 products
Debian2 products
  • php-horde-form< 2.0.20-1 | < 2.0.8-2+deb8u2
  • debian_linuxEOL8.0
Ubuntu1 product
  • php-horde-formAll versions (No fix recorded)

3 vendors · 6 products

References

7 links