CVE-2020-27955

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 82.7%, top 0% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Weaponized
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 83%
CISA-KEV: Not listedEPSS: 83%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Git LFS 2.12.0 allows Remote Code Execution.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
82(Track*)
EG Risk 82/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation83% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
99.6%
KEV
Not listed

Published

November 5, 2020

Last Modified

November 21, 2024

Advisory Details (7)

Auto-updated Jul 13, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Full Disclosure: Git LFS (git-lfs) - Remote Code Execution (RCE) exploit CVE-2020-27955 - Clone to Pwn

http://seclists.org/fulldisclosure/2020/Nov/1
generic

Packet Storm Security

http://packetstormsecurity.com/files/164180/Git-git-lfs-Remote-Code-Execution.html
generic

Packet Storm Security

http://packetstormsecurity.com/files/159923/git-lfs-Remote-Code-Execution.html
generic🟡 PoC Available

Git LFS RCE (Remote Code Execution) Exploit CVE-2020-27955

https://legalhackers.com/advisories/Git-LFS-RCE-Exploit-CVE-2020-27955.html
generic

Legal/ethical hacking. Information security.

https://legalhackers.com
generic

Releases · git-lfs/git-lfs · GitHub

https://github.com/git-lfs/git-lfs/releases
generic

ExploitBox.io - A playground & labs For Hackers, 0day Bug Hunters, Pentesters, Security Researchers

https://exploitbox.io

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/git-lfs/git-lfs—2.12.1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 01:52 UTCEG score recompute
  2. 2026-07-22 22:38 UTCEG score recompute
  3. 2026-07-22 14:05 UTCEPSS rescore
  4. 2026-07-21 15:22 UTCEPSS rescore
  5. 2026-07-21 15:22 UTCEPSS rescore
  6. 2026-07-20 17:04 UTCEPSS rescore
  7. 2026-07-20 17:04 UTCEPSS rescore
  8. 2026-07-19 02:26 UTCEPSS rescore
  9. 2026-07-19 02:26 UTCEPSS rescore
  10. 2026-07-15 16:55 UTCEPSS rescore
  11. 2026-07-15 16:55 UTCEPSS rescore
  12. 2026-07-13 06:10 UTCEPSS rescore
  13. 2026-07-13 06:10 UTCEPSS rescore
  14. 2026-07-12 23:38 UTCOSV refresh
  15. 2026-07-11 08:25 UTCEPSS rescore
  16. 2026-07-11 08:25 UTCEPSS rescore
  17. 2026-07-07 13:43 UTCEPSS rescore
  18. 2026-07-04 06:29 UTCEPSS rescore
  19. 2026-07-04 06:29 UTCEPSS rescore
  20. 2026-06-30 23:20 UTCEPSS rescore
  21. 2026-06-30 23:20 UTCEPSS rescore
  22. 2026-06-29 14:04 UTCEPSS rescore
  23. 2026-06-27 03:06 UTCEPSS rescore
  24. 2026-06-27 03:06 UTCEPSS rescore
  25. 2026-06-24 14:03 UTCEPSS rescore
Show 18 more
  1. 2026-06-24 14:03 UTCEPSS rescore
  2. 2026-06-24 09:29 UTCOSV refresh
  3. 2026-06-23 21:31 UTCEPSS rescore
  4. 2026-06-23 21:31 UTCEPSS rescore
  5. 2026-06-21 01:57 UTCEPSS rescore
  6. 2026-06-17 17:50 UTCEPSS rescore
  7. 2026-06-15 17:46 UTCEPSS rescore
  8. 2026-06-10 22:16 UTCEPSS rescore
  9. 2026-06-08 14:15 UTCEPSS rescore
  10. 2026-06-07 13:30 UTCOSV refresh
  11. 2026-06-04 13:10 UTCEPSS rescore
  12. 2026-06-04 13:10 UTCEPSS rescore
  13. 2026-05-29 13:42 UTCEPSS rescore
  14. 2026-05-26 13:42 UTCEPSS rescore
  15. 2026-05-26 13:42 UTCEPSS rescore
  16. 2026-05-26 07:17 UTCEPSS rescore
  17. 2026-05-26 07:17 UTCEPSS rescore
  18. 2026-05-23 05:40 UTCEG score recompute

Publicly available exploits

(4 references)

Working exploit code is in the public domain (1 Metasploit module) (3 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCr00t4dm/CVE-2020-27955
    First seen Nov 24, 2020
    Open source ↗
  • GitHub PoCExploitBox/git-lfs-RCE-exploit-CVE-2020-27955-Go
    First seen Nov 4, 2020
    Open source ↗
  • Metasploitexploit/windows/http/git_lfs_rce✓ verified
    First seen Nov 4, 2020

    Git Remote Code Execution via git-lfs (CVE-2020-27955)

    Open source ↗
  • GitHub PoCExploitBox/git-lfs-RCE-exploit-CVE-2020-27955
    First seen Nov 3, 2020

    Git-lfs RCE exploit CVE-2020-27955 - tested on Windows on: git, gh cli, GitHub Desktop, Visual Studio, SourceTree etc.

    Open source ↗

Frequently asked(5)

What is CVE-2020-27955?
CVE-2020-27955 is a critical vulnerability published on November 5, 2020. Git LFS 2.12.0 allows Remote Code Execution.
When was CVE-2020-27955 disclosed?
CVE-2020-27955 was first published in the National Vulnerability Database on November 5, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-27955 actively exploited?
CVE-2020-27955 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-27955?
CVE-2020-27955 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2020-27955?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-27955, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-27955

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