CVE-2015-0646

Ios Xe vulnerability

CVSS

7.8

EPSS

3.8%

EPSS pct

89th

Exploited

No known

Memory leak in the TCP input module in Cisco IOS 12.2, 12.4, 15.0, 15.2, 15.3, and 15.4 and IOS XE 3.3.xXO, 3.5.xE, 3.6.xE, 3.8.xS through 3.10.xS before 3.10.5S, and 3.11.xS and 3.12.xS before 3.12.3S allows remote attackers to cause a denial of service (memory consumption or device reload) by sending crafted TCP packets over (1) IPv4 or (2) IPv6, aka Bug ID CSCum94811.

Affected vendor

Cisco

Affected product

Ios Xe

CVSS vector

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

Weakness type (CWE)

CWE-399

Published

2015-03-26

Risk analysis

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

Its EPSS score of 3.8% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2015-0646

Confirm whether Cisco Ios Xe is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2015-0646.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2015-0646

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2015-0646 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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