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Vulnerabilities

Vulnerability · CVE-2020-22218

An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out of bounds memory.

Published Aug 22, 2023 · catalog updated Oct 14, 2026 · An issue was discovered

Check if you run it

No confirmed exploitation is on record for CVE-2020-22218. EPSS is 1.16%. Act only if a listed version of An issue was discovered 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 issue was discovered).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.16%
Remediation
Advisory link
Affected products
cpe libssh2/libssh2

An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out of bounds 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 libssh2/libssh21.10.0

How to fix CVE-2020-22218

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-2020-22218. EPSS is 1.16%. Act only if a listed version of An issue was discovered is installed.

Which versions are affected?

Compare what you have installed with 1.10.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS 1.16%. 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.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 22, 2023 · NIST NVD

    Detected

    An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out of bounds memory.

  2. Oct 14, 2026 · NIST NVD

    Updated

    An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out of bounds memory.

Sources

  • CVE.orgVulnerability recordCVE-2020-22218

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-22218

    30-day exploitation probability 1.2%

    first.org
  • NIST NVDVulnerability recordCVE-2020-22218

    An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out of bounds 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.