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CVE-2018-0272

20
FAUCET Score

CVE-2018-0272 describes a denial-of-service vulnerability in the SSL Engine of Cisco Firepower System Software, stemming from improper error handling of SSL traffic. An unauthenticated, remote attacker can exploit this by sending a high volume of crafted SSL traffic, leading to persistent high CPU utilization and degraded device performance. With a CVSS score of 5.9 (MEDIUM), this vulnerability is remotely exploitable with high attack complexity, but does not impact confidentiality or integrity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
6.2.1CPE matchmatch criteria
cpe:2.3:a:cisco:firepower:6.2.1:*:*:*:*:*:*:*
6.2.2.1CPE matchmatch criteria
cpe:2.3:a:cisco:firepower:6.2.2.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.34%
Probability of exploitation in next 30 days
EPSS Percentile
68.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0134 is in the 38th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

Vendor Patches (1)

ciscoworkaround availablevia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-firepower
MitigationVendor Advisory
securityfocus.com / bid/103925
Third Party AdvisoryVDB Entry