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CVE-1999-0517

43
FAUCET Score

CVE-1999-0517 describes a critical vulnerability where Simple Network Management Protocol (SNMP) community strings are set to default, null, or missing values, impacting HP-UX and SunOS systems. This allows unauthenticated attackers to gain unauthorized access to device information and potentially modify configurations, leading to full compromise (C, I, A: P) with low attack complexity (AC:L) over the network (AV:N). While not listed on KEV, the vulnerability has a high EPSS score of 0.90468, indicating a significant likelihood of exploitation, and Metasploit modules exist for enumeration and community string scanning, despite a lack of public discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
10CPE matchmatch criteria
cpe:2.3:o:hp:hp-ux:10:*:*:*:*:*:*:*
11.00CPE matchmatch criteria
cpe:2.3:o:hp:hp-ux:11.00:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:o:sun:sunos:5.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
27.17%
Probability of exploitation in next 30 days
EPSS Percentile
97.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2717 is in the 100th percentile among its peer group of 3,052 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

broadcom.com / support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-244
broadcom.com / support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-244
exchange.xforce.ibmcloud.com / vulnerabilities/CVE-1999-0517