8.1

CVE-2020-36254: dropbear_ssh_project dropbear_ssh

Modified
AliasesALPINE-CVE-2020-36254UBUNTU-CVE-2020-36254DEBIAN-CVE-2020-36254
Published 25-02-2021Last modified 03-12-2025

Vulnerability summary

CVE-2020-36254 is a high (CVSS 8.1) vulnerability in dropbear_ssh_project dropbear_ssh. EPSS estimates a 1.88% chance of exploitation in the next 30 days, higher than 79.4% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 8.1 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
8.1/10
010
High · v3.1 (CVE.org)
EPSS score
1.88%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 25-02-2021
    PublishedVulnerability first disclosed.
  2. 03-12-2025
    Last modifiedVulnerability information updated.

Description

scp.c in Dropbear before 2020.79 mishandles the filename of . or an empty filename, a related issue to CVE-2018-20685.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

1.88%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 1.87% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Alpine1 product
  • dropbear< 2019.78-r1
Debian1 product
  • dropbear< 2020.79-1
Dropbear_ssh_project1 product
Ubuntu1 product
  • dropbearAll versions (No fix recorded)

4 vendors · 4 products

References

5 links