How severe is CVE-2018-0140?

CVE-2018-0140 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-0140 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-0140?

CVE-2018-0140 primarily affects Cisco Email Security Appliance Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-0140?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-0140 published?

CVE-2018-0140 was published on 2018-02-08 and last updated on 2026-06-17.

CVE-2018-0140

CVE-2018-0140 is a medium-severity vulnerability in Cisco Email Security Appliance Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-425.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-425
Affected product: Cisco Email Security Appliance Firmware
Published: 2018-02-08
Last modified: 2026-06-17

Description

A vulnerability in the spam quarantine of Cisco Email Security Appliance and Cisco Content Security Management Appliance could allow an authenticated, remote attacker to download any message from the spam quarantine by modifying browser string information. The vulnerability is due to a lack of verification of authenticated user accounts. An attacker could exploit this vulnerability by modifying browser strings to see messages submitted by other users to the spam quarantine within their company. Cisco Bug IDs: CSCvg39759, CSCvg42295.

Frequently asked questions

What is CVE-2018-0140?: A vulnerability in the spam quarantine of Cisco Email Security Appliance and Cisco Content Security Management Appliance could allow an authenticated, remote attacker to download any message from the spam quarantine by modifying browser string information. The vulnerability is due to a lack of verification of authenticated user accounts. An attacker could exploit this vulnerability by modifying browser strings to see messages submitted by other users to the spam quarantine within their company. Cisco Bug IDs: CSCvg39759, CSCvg42295.
How severe is CVE-2018-0140?: CVE-2018-0140 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-0140 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-0140?: CVE-2018-0140 primarily affects Cisco Email Security Appliance Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-0140?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-0140 published?: CVE-2018-0140 was published on 2018-02-08 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:o:cisco:email_security_appliance_firmware:9.8.0-112:*:*:*:*:*:*:*
cpe:2.3:o:cisco:email_security_appliance_firmware:10.0.1-087:*:*:*:*:*:*:*
cpe:2.3:o:cisco:email_security_appliance_firmware:11.0.0-274:*:*:*:*:*:*:*
cpe:2.3:o:cisco:content_security_management_appliance:10.0.0-096:*:*:*:*:*:*:*
cpe:2.3:o:cisco:content_security_management_appliance:10.1.0-037:*:*:*:*:*:*:*
cpe:2.3:o:cisco:content_security_management_appliance:10.1.0-052:*:*:*:*:*:*:*
cpe:2.3:o:cisco:content_security_management_appliance:11.0.0-115:*:*:*:*:*:*:*

More vulnerabilities in Cisco Email Security Appliance Firmware

CVE-2016-6406 — Critical (CVSS 9.8): Cisco IronPort AsyncOS 9.1.2-023, 9.1.2-028, 9.1.2-036, 9.7.2-046, 9.7.2-047, 9.7.2-054, 10.0.0-124, and 10.0.0-125 on…
CVE-2018-15453 — High (CVSS 8.6): A vulnerability in the Secure/Multipurpose Internet Mail Extensions (S/MIME) Decryption and Verification or S/MIME…
CVE-2014-2119 — High (CVSS 8.5): The End User Safelist/Blocklist (aka SLBL) service in Cisco AsyncOS Software for Email Security Appliance (ESA) before…
CVE-2013-5537 — High (CVSS 7.8): The web framework on Cisco Web Security Appliance (WSA), Email Security Appliance (ESA), and Content Security…
CVE-2019-15961 — High (CVSS 7.5): A vulnerability in the email parsing module Clam AntiVirus (ClamAV) Software versions 0.102.0, 0.101.4 and prior could…
CVE-2019-12706 — High (CVSS 7.5): A vulnerability in the Sender Policy Framework (SPF) functionality of Cisco AsyncOS Software for Cisco Email Security…

All CVEs affecting Cisco Email Security Appliance Firmware →

Other CWE-425 vulnerabilities

CVE-2025-26689 — Critical (CVSS 9.8): Direct request ('Forced Browsing') issue exists in CHOCO TEI WATCHER mini (IB-MCT001) all versions. If a remote…
CVE-2024-0204 — Critical (CVSS 9.8): Authentication bypass in Fortra's GoAnywhere MFT prior to 7.4.1 allows an unauthorized user to create an admin user via…
CVE-2022-45276 — Critical (CVSS 9.8): An issue in the /index/user/user_edit.html component of YJCMS v1.0.9 allows unauthenticated attackers to obtain the…
CVE-2022-26279 — Critical (CVSS 9.8): EyouCMS v1.5.5 was discovered to have no access control in the component /data/sqldata.
CVE-2021-36560 — Critical (CVSS 9.8): Phone Shop Sales Managements System using PHP with Source Code 1.0 is vulnerable to authentication bypass which leads…
CVE-2021-36745 — Critical (CVSS 9.8): A vulnerability in Trend Micro ServerProtect for Storage 6.0, ServerProtect for EMC Celerra 5.8, ServerProtect for…

Browse all CWE-425 vulnerabilities →