CVE-2020-24614 [High] | Security Vulnerability in Fossil

CVE-2020-24614 is rated High Risk (66.8/100): CVSS High severity, with high exploitation likelihood (EPSS 6.40%, 91th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-08-27	6.56%	6.40%	-0.15%
2	2025-05-29	5.27%	6.56%	+1.29%
3	2025-05-05	—	5.27%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-08-27

6.56%

6.40%

-0.15%

2025-05-29

5.27%

6.56%

+1.29%

2025-05-05

—

5.27%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
8.8	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	2.8	5.9	[email protected]
6.5	2.0	MEDIUM	`AV:N/AC:L/Au:S/C:P/I:P/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:S) A single authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	8.0	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

8.8

3.1

HIGH

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

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

2.8

5.9

[email protected]

6.5

2.0

MEDIUM

AV:N/AC:L/Au:S/C:P/I:P/A:P Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:S): A single authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

8.0

6.4

[email protected]

OS Trackers for CVE-2020-24614

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2020-24614 not yet assigned priority: Debian including 1 source packages (fossil), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): resolved 4.	https://security-tracker.debian.org/tracker/CVE-2020-24614
`gentoo`	normal	CVE-2020-24614: 1 GLSA(s) (202011-04), 1 atom(s) (dev-vcs/fossil); latest impact normal.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-24614
`ubuntu`	medium	CVE-2020-24614 medium priority: Ubuntu including 1 source packages (fossil), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 11, needs-triage 3, DNE 1, released 1.	https://ubuntu.com/security/CVE-2020-24614

Affected software / configurations for CVE-2020-24614

Vendor	Product	Version	Raw CPE
fossil-scm	fossil	< 2.10.2	cpe:2.3:a:fossil-scm:fossil::::::::
fossil-scm	fossil	>= 2.11.0, < 2.11.2	cpe:2.3:a:fossil-scm:fossil::::::::
fossil-scm	fossil	>= 2.12.0, < 2.12.1	cpe:2.3:a:fossil-scm:fossil::::::::
fedoraproject	fedora	32	cpe:2.3:o:fedoraproject:fedora:32:::::::*
fedoraproject	fedora	33	cpe:2.3:o:fedoraproject:fedora:33:::::::*
opensuse	backports_sle	15.0	cpe:2.3:a:opensuse:backports_sle:15.0:sp1::::::
opensuse	backports_sle	15.0	cpe:2.3:a:opensuse:backports_sle:15.0:sp2::::::
opensuse	leap	15.1	cpe:2.3:o:opensuse:leap:15.1:::::::*
opensuse	leap	15.2	cpe:2.3:o:opensuse:leap:15.2:::::::*

References for CVE-2020-24614

URL	Tags
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00065.html	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/08/25/1	Mailing List Third Party Advisory
https://fossil-scm.org/forum/info/a05ae3ce7760daf6	Vendor Advisory
https://fossil-scm.org/fossil/vdiff?branch=sec2020-2.12-patch&diff=1&w	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ARYF4YMYXCANXUDS3B3CA4JGUZNUJOJA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GVZK4K7SFBQRCGCHS76HW2LTSEH2KSUM/
https://security.gentoo.org/glsa/202011-04	Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/08/20/1	Mailing List Third Party Advisory

URL

CVE-2020-24614

Exploit prediction scoring system (EPSS) score for CVE-2020-24614

Common vulnerability scoring system (CVSS) metrics for CVE-2020-24614

Weakness enumeration for CVE-2020-24614

OS Trackers for CVE-2020-24614

Affected software / configurations for CVE-2020-24614

References for CVE-2020-24614