CVE-1999-1550

Tmos vulnerability

CVSS

5.0

EPSS

8.6%

EPSS pct

95th

Exploited

No known

bigconf.conf in F5 BIG/ip 2.1.2 and earlier allows remote attackers to read arbitrary files by specifying the target file in the "file" parameter.

Affected vendor

Affected product

Tmos

CVSS vector

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

Published

1999-11-08

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality.

Its EPSS score of 8.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-1999-1550

Confirm whether F5 Tmos is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-1999-1550.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-1999-1550

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-1999-1550 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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