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CVE-1999-1216

20
FAUCET Score

CVE-1999-1216 describes a security bypass vulnerability in Cisco routers running versions 9.17 and earlier. Remote attackers can exploit this flaw by sending specially crafted IP source-routed packets, circumventing the "no ip source-route" command's intended restrictions. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating a network-based attack with low complexity that could lead to partial compromise of confidentiality, integrity, and availability. Despite its age and high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 9.17CPE matchmatch criteria
cpe:2.3:h:cisco:router:*:*:*:*:*:*:*:*
8.2CPE matchmatch criteria
cpe:2.3:h:cisco:router:8.2:*:*:*:*:*:*:*
8.3CPE matchmatch criteria
cpe:2.3:h:cisco:router:8.3:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:h:cisco:router:9.0:*:*:*:*:*:*:*
9.1CPE matchmatch criteria
cpe:2.3:h:cisco:router:9.1:*:*:*:*:*:*:*

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
2.08%
Probability of exploitation in next 30 days
EPSS Percentile
79.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0208 is in the 64th percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

ciac.llnl.gov / ciac/bulletins/d-15.shtml
PatchVendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/541
cert.org / advisories/CA-1993-07.html
PatchThird Party AdvisoryUS Government Resource