Vulnerability Monitor

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CVE-2000-0678

PGP 5.5.x through 6.5.3 does not properly check if an Additional Decryption Key (ADK) is stored in the signed portion of a public certificate, which allows an attacker who can modify a victim's public certificate to decrypt any data that has been encrypted with the modified certificate.

Security Impact Summary

CVE-2000-0678 is a security vulnerability that . Impacting 1 product from pgp organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2000, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2000-10-20T04:00:00.000

Last Modified

2026-04-16T00:27:16.627

Status

Modified

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
NVD-CWE-Other

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	pgp	pgp	5.5.3i	Yes
Application	pgp	pgp	6.5.1i	Yes
Application	pgp	pgp	6.5.3i	Yes

References

http://www.cert.org/advisories/CA-2000-18.html Third Party Advisory, US Government Resource ([email protected])
http://www.osvdb.org/4354 ([email protected])
http://www.securityfocus.com/bid/1606 Patch, Vendor Advisory ([email protected])
http://www.cert.org/advisories/CA-2000-18.html Third Party Advisory, US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.osvdb.org/4354 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/1606 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For pgp's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.