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CVE-2020-12640

28
FAUCET Score

CVE-2020-12640 is a critical directory traversal vulnerability in Roundcube Webmail versions prior to 1.4.4, allowing attackers to include local files and execute code. This flaw affects various openSUSE and Roundcube Webmail products. With a CVSS score of 9.8, it presents a severe risk due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, its high EPSS and FAUCET Risk Score indicate a substantial potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.2.0, < 1.2.10CPE matchmatch criteria
cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
>= 1.3.0, < 1.3.11CPE matchmatch criteria
cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
>= 1.4.0, < 1.4.4CPE matchmatch criteria
cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:a:opensuse:backports_sle:15.0:sp2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
6.73%
Probability of exploitation in next 30 days
EPSS Percentile
93.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0673 is in the 88th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

lists.opensuse.org / opensuse-security-announce/2020-09/msg00083.html
Third Party Advisory
github.com / DrunkenShells/Disclosures/tree/master/CVE-2020-12640-PHP%20Local%20File%20Inclusion-Roundcube
ExploitThird Party Advisory
github.com / roundcube/roundcubemail/commit/814eadb699e8576ce3a78f21e95bf69a7c7b3794
PatchThird Party Advisory
github.com / roundcube/roundcubemail/compare/1.4.3...1.4.4
Release NotesThird Party Advisory
github.com / roundcube/roundcubemail/releases/tag/1.4.4
Release NotesThird Party Advisory
roundcube.net / news/2020/04/29/security-updates-1.4.4-1.3.11-and-1.2.10
Release NotesVendor Advisory
security.gentoo.org / glsa/202007-41
Third Party Advisory