CVE-2001-1016

PGP Corporate Desktop before 7.1, Personal Security before 7.0.3, Freeware before 7.0.3, and E-Business Server before 7.1 does not properly display when invalid userID's are used to sign a message, which could allow an attacker to make the user believe that the document has been signed by a trusted third party by adding a second, invalid user ID to a key which has already been signed by the third party, aka the "PGPsdk Key Validity Vulnerability."

Published: 2001-09-04 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2001-1016 is rated Moderate Risk (54.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.36%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2001-1016

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.54% 1.36% +0.82%
2 2025-03-30 0.60% 0.54% -0.06%
3 2025-03-29 — 0.60% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2001-1016

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2001-1016

Affected software / configurations for CVE-2001-1016

Vendor Product Version Raw CPE
pgp corporate_desktop 7.1 cpe:2.3:a:pgp:corporate_desktop:7.1:*:*:*:*:*:*:*
pgp e-business_server 6.5.8 cpe:2.3:a:pgp:e-business_server:6.5.8:*:*:*:*:*:*:*
pgp e-business_server 7.0.4 cpe:2.3:a:pgp:e-business_server:7.0.4:*:*:*:*:*:*:*
pgp e-business_server 7.1 cpe:2.3:a:pgp:e-business_server:7.1:*:*:*:*:*:*:*
pgp freeware 7.0.3 cpe:2.3:a:pgp:freeware:7.0.3:*:*:*:*:*:*:*
pgp personal_security 7.0.3 cpe:2.3:a:pgp:personal_security:7.0.3:*:*:*:*:*:*:*
pgp pgp 5.0 cpe:2.3:a:pgp:pgp:5.0:*:*:*:*:*:*:*
pgp pgp 6.0.2 cpe:2.3:a:pgp:pgp:6.0.2:*:*:*:*:*:*:*

References for CVE-2001-1016

cvelogic Threat Intelligence