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CVE Record

CVE-2004-1440: Multiple heap-based buffer overflows in the modpow function in PuTTY before 0.55 allow (1) remote attackers...

Multiple heap-based buffer overflows in the modpow function in PuTTY before 0.55 allow (1) remote attackers to execute arbitrary code via an SSH2 packet with a base argument that is larger than the mod argument, which causes the modpow function to write memory before the beginning of its buffer, and (2) remote malicious servers to cause a denial of service (client crash) and possibly execute arbitrary code via a large bignum during authentication.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2004-1440 is an old PuTTY vulnerability where specially crafted SSH2 data could crash the client or possibly run code. The practical risk today is mostly legacy exposure: forgotten pre-0.55 PuTTY installations used by administrators or bundled in old toolsets. Exposure is likely limited to environments still running PuTTY releases before 0.55 or old bundled PuTTY/PSCP copies. Modern managed builds should be unaffected if they have been updated since the 2004 advisory period. Prioritize this where administrators may still use unmanaged or portable SSH tools. It is not a current mass-exploitation signal from the provided sources, but pre-0.55 PuTTY in privileged workflows creates avoidable code-execution risk. Mitigation focus: Upgrade PuTTY installations to version 0.55 or later.; Remove obsolete standalone PuTTY and PSCP binaries from endpoints.; Check vendor or OS package advisories for supported fixed packages..

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Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors
0Timeline events
0ADP providers
2Source links

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Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
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Weakness

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