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CVE-2018-0239

24
FAUCET Score

CVE-2018-0239 is a denial-of-service vulnerability in Cisco StarOS for ASR 5700 Series devices and Virtualized Packet Core System Software, affecting egress packet processing. An unauthenticated, remote attacker can send crafted IP packets to cause a network interface to stop forwarding traffic, requiring a manual reload. With a CVSS score of 7.5 (High), this vulnerability has a network attack vector, low attack complexity, and high availability impact, with no confidentiality or integrity impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
21.0.v0.65819CPE matchmatch criteria
cpe:2.3:o:cisco:staros:21.0.v0.65819:*:*:*:*:*:*:*
21.0.v4CPE matchmatch criteria
cpe:2.3:o:cisco:staros:21.0.v4:*:*:*:*:*:*:*
21.1.v6CPE matchmatch criteria
cpe:2.3:o:cisco:staros:21.1.v6:*:*:*:*:*:*:*
21.3.1CPE matchmatch criteria
cpe:2.3:o:cisco:staros:21.3.1:*:*:*:*:*:*:*
21.4.0CPE matchmatch criteria
cpe:2.3:o:cisco:staros:21.4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.45%
Probability of exploitation in next 30 days
EPSS Percentile
87.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0345 is in the 78th percentile among its peer group of 51,506 CVEs.

Social Chatter

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

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-staros
Vendor Advisory
securityfocus.com / bid/103923
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040720
Third Party AdvisoryVDB Entry