CVE-2017-122409.8CriticalCWE-20

CVE-2017-12240: Cisco IOS and IOS XE vulnerability

Cisco · Cisco IOS and IOS XE

Affected: Cisco IOS and IOS XE · Exploitation: in CISA KEV since 3 Mar 2022

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

ExploitationIn CISA KEV

In CISA KEVCISA KEV catalogue3 Mar 2022
Exploited (reported): not seen
Scanning observed: not seen
Proof of concept public: not seen
Not established: not seen

13.8%probability of exploitation in the next 30 days

96th percentile

050100

Higher than 96% of scored CVEs

9.8CriticalCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

The DHCP relay subsystem of Cisco IOS 12.2 through 15.6 and Cisco IOS XE Software contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code and gain full control of an affected system. The attacker could also cause an affected system to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to a buffer overflow condition in the DHCP relay subsystem of the affected software. An attacker could exploit this vulnerability by sending a crafted DHCP Version 4 (DHCPv4) packet to an affected system. A successful exploit could allow the attacker to execute arbitrary code and gain full control of the affected system or cause the affected system to reload, resulting in a DoS condition. Cisco Bug IDs: CSCsm45390, CSCuw77959.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Cisco IOS and IOS XECisco IOS and IOS XE

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalogue.
CISA KEV: Listed since 3 Mar 2022 · catalogue entry
Public check: No public nuclei template
Weakness: Improper Input Validation · Input Validation and Logic
Vendor: Cisco
Published: September 2017
Band: Exploited in the wild, September 2017

What changed

3 Mar 2022
CISA added it to the KEV catalogue CISA

CoverageNo articles yet

No CyberSIXT article names CVE-2017-12240 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.