Vulnerability · CVE-2019-3860
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SFTP packets with empty payloads are parsed.
Published Mar 25, 2019 · catalog updated Oct 14, 2026 · An out of bounds
Check if you run it
No confirmed exploitation is on record for CVE-2019-3860. EPSS is 5.42%. Act only if a listed version of An out of bounds is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (An out of bounds).
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Critical9.1
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 5.42%
- Remediation
- Advisory link
- Affected products
- cpe debian/debian linux · cpe libssh2/libssh2 · cpe netapp/ontap select deploy administration utility · cpe opensuse/leap
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SFTP packets with empty payloads are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe debian/debian linux8.0
- cpe libssh2/libssh2version unspecified
- cpe netapp/ontap select deploy administration utilityversion unspecified
- cpe opensuse/leap15.0
- cpe opensuse/leap42.3
How to fix CVE-2019-3860
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2019-3860. EPSS is 5.42%. Act only if a listed version of An out of bounds is installed.
Which versions are affected?
Compare what you have installed with debian/debian linux 8.0. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-125: Out-of-bounds Read. EPSS 5.42%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Mar 25, 2019 · NIST NVD
Detected
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SFTP packets with empty payloads are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Oct 14, 2026 · NIST NVD
Updated
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SFTP packets with empty payloads are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Sources
- CVE.orgVulnerability recordCVE-2019-3860
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2019-3860
30-day exploitation probability 5.4%
first.org - NIST NVDVulnerability recordCVE-2019-3860
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SFTP packets with empty payloads are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.