CVE-2015-2157
Published Mar 27, 2015 · Updated Oct 23, 2026
Original summary
Normalized public record · Updated Oct 23, 2026
The (1) ssh2_load_userkey and (2) ssh2_save_userkey functions in PuTTY 0.51 through 0.63 do not properly wipe SSH-2 private keys from memory, which allows local users to obtain sensitive information by reading the memory.
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
The (1) ssh2_load_userkey and (2) ssh2_save_userkey functions in PuTTY 0.51 through 0.63 do not properly wipe SSH-2 private keys from memory, which allows local users to obtain sensitive information by reading the memory.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- www.chiark.greenend.org.uk ↗
- FEDORA-2015-3160 ↗
- 72825 ↗
- DSA-3190 ↗
- FEDORA-2015-3070 ↗
- [oss-security] 20150228 CVE Request: PuTTY fails to clear private key information from memory ↗
- www.chiark.greenend.org.uk ↗
- [oss-security] 20150228 Re: CVE Request: PuTTY fails to clear private key information from memory ↗
- openSUSE-SU-2015:0474 ↗
- FEDORA-2015-3204 ↗
Record history
Published Mar 27, 2015 · Last refreshed Oct 23, 2026