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No exploitation reportedFix available

CVE-2020-6097

No exploitation reported by the sources we read.

  • Published2020-09-10
  • WeaknessCWE-617

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp 0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests trigger an assert() call resulting in denial-of-service. An attacker can send a sequence of malicious packets to trigger this vulnerability.

Timeline

dates in UTC
  1. 2020-09-1015:15CVE publishedNVD

Versions per branch

NVD
Atftp project atftp
BranchAffectedFixed in
0.7= 0.7.git20120829-3.1\+b1no fix published
Debian debian linux
BranchAffectedFixed in
9.0= 9.0no fix published
Opensuse leap
BranchAffectedFixed in
15.2= 15.2no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • atftpUbuntu:Pro:18.04:LTSall versions · fixed in 0.7.git20120829-3.1~0.18.04.1+esm1
  • atftpUbuntu:Pro:16.04:LTSall versions · fixed in 0.7.git20120829-3.1~0.16.04.1+esm1
  • atftpUbuntu:20.04:LTSall versions · fixed in 0.7.git20120829-3.1ubuntu0.1
  • atftpopenSUSE:Tumbleweedall versions · fixed in 0.7.5-1.1
  • atftpopenSUSE:Leap 15.2all versions · fixed in 0.7.2-lp152.2.3.1
  • atftpDebian:14all versions · fixed in 0.7.git20120829-3.2
  • atftpDebian:13all versions · fixed in 0.7.git20120829-3.2
  • atftpDebian:12all versions · fixed in 0.7.git20120829-3.2

1 more package range on OSV.dev

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.17.5read 2026-10-23
  • CNACVSS 3.07.5known since 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-617known since 2026-10-23
  • NVDweakness (CWE)CWE-617read 2026-10-23
  • FIRST EPSSEPSS score2.2 %2026-11-09
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2020-09-10
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-g854-fc3p-gq33

Frequently asked questions

What is CVE-2020-6097?

An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp 0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests trigger an assert() call resulting in denial-of-service. An attacker can send a sequence of malicious packets to trigger this vulnerability.

Is CVE-2020-6097 actively exploited?

Active exploitation of CVE-2020-6097 has not been confirmed. Its EPSS score was 2.2% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-6097?

CVE-2020-6097 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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