CVE-2020-27955

Exp

Git LFS 2.12.0 allows Remote Code Execution.

Published: 2020-11-05 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-27955 is rated High Exploit Risk (88.4/100): CVSS Critical severity, with high exploitation likelihood (EPSS 92.93%, 100th percentile). 5 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2020-27955

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-27955

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-26 93.61% 92.93% -0.68%
2 2026-03-26 92.93% 93.61% +0.68%
3 2026-01-18 — 92.93% —

Full EPSS history (39 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-27955

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/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:N)
No account or special rights needed—anonymous or random user is enough.
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.
 3.9 5.9 [email protected]
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C 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:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2020-27955

GitHub Security Advisory for CVE-2020-27955

GHSA-4g4p-42wc-9f3m · Severity: critical · Ecosystem: go — Git LFS can execute a Git binary from the current directory

OS Trackers for CVE-2020-27955

vendor priority summary link
debian unimportant CVE-2020-27955 unimportant priority: Debian including 1 source packages (git-lfs), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2020-27955
ubuntu medium CVE-2020-27955 medium priority: Ubuntu including 1 source packages (git-lfs), 6 status rows across 6 suites (bionic, focal, groovy, trusty, upstream, xenial): not-affected 3, DNE 2, needs-triage 1. https://ubuntu.com/security/CVE-2020-27955

Affected software / configurations for CVE-2020-27955

Vendor Product Version Raw CPE
git_large_file_storage_project git_large_file_storage 2.12.0 cpe:2.3:a:git_large_file_storage_project:git_large_file_storage:2.12.0:*:*:*:*:*:*:*

References for CVE-2020-27955

URL Tags
http://packetstormsecurity.com/files/159923/git-lfs-Remote-Code-Execution.html Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/164180/Git-git-lfs-Remote-Code-Execution.html Exploit Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2020/Nov/1 Exploit Mailing List Third Party Advisory
https://exploitbox.io Exploit Third Party Advisory
https://github.com/git-lfs/git-lfs/releases Release Notes Third Party Advisory
https://legalhackers.com Third Party Advisory
https://legalhackers.com/advisories/Git-LFS-RCE-Exploit-CVE-2020-27955.html Exploit Third Party Advisory
cvelogic Threat Intelligence