CVE-1999-1049

ARCserve NT agents use weak encryption (XOR) for passwords, which allows remote attackers to sniff the authentication request to port 6050 and decrypt the password.

Published: 1999-02-21 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-1049 is rated Moderate Risk (59.9/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.46%). 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-1999-1049

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 2025-03-30 1.93% 0.46% -1.48%
2 2025-03-29 0.46% 1.93% +1.48%
3 2025-03-17 — 0.46% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-1049

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C 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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-1999-1049

Affected software / configurations for CVE-1999-1049

Vendor Product Version Raw CPE
broadcom arcserve_backup <= 6.5 cpe:2.3:a:broadcom:arcserve_backup:*:*:*:*:*:*:*:*

References for CVE-1999-1049

cvelogic Threat Intelligence