CVE-2018-0125: Cisco VPN Routers Remote Code Execution Vulnerability

Recommended actionProtect now

CISA confirms exploitation in the wild and lists 2022-04-15 as the remediation due date.

Fix not verified

What, why and how

A vulnerability in the web interface of the Cisco VPN Routers could allow an unauthenticated, remote attacker to execute arbitrary code as root and gain full control of an affected system.

What

A vulnerability in the web interface of the Cisco VPN Routers could allow an unauthenticated, remote attacker to execute arbitrary code as root and gain full control of an affected system.

Why

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may execute code or commands in the affected security context.

What

A vulnerability in the web interface of the Cisco VPN Routers could allow an unauthenticated, remote attacker to execute arbitrary code as root and gain full control of an affected system.

Why

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

How

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2022-03-25.

Public PoC / exploit material

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path: a network path → Improper Input Validation → execute code or commands in the affected security context
Attack surface: Network
Privileges required: None: unauthenticated exploitation is possible
User interaction: None
Attack complexity: Low: no specialised conditions are recorded
Security boundary: Unchanged: impact remains within the vulnerable component's security authority
Weakness ? CWE means Common Weakness Enumeration: a standard category for the underlying weakness.: CWE-20 ↗
CWE-20: Improper Input Validation. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
CVSS vector ? CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land: After compromise, an attacker may use built-in shells, scripting engines, scheduled tasks and native network utilities for discovery, persistence or movement. This is a plausible LoTL path, not evidence that it has occurred for every attack.

NetworkUnauthenticatedRemote code executionCWE-20CISA KEV

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2018-0948Known-exploited evidence recorded

A vulnerability in the web interface of the Cisco RV132W ADSL2+ Wireless-N VPN and RV134W VDSL2 Wireless-AC VPN Routers could allow an unauthenticated, remote attacker to execute arbitrary code and gain full control of an affected system, including issuing commands with root privileges. The attacker could also cause an affected system to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to an incomplete input validation on user-controlled input in an HTTP request to the targeted device. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected system. A successful exploit could allow the attacker to execute arbitrary code as the root user and gain full control of the affected system or cause it to reload, resulting in a DoS condition. This vulnerability is fixed in firmware version 1.0.1.11 for the following Cisco products: RV132W ADSL2+ Wireless-N VPN Router and RV134W VDSL2 Wireless-AC VPN Router. Cisco Bug IDs: CSCvg92737, CSCvh60170.

Official EUVD record ↗

Canadian Centre for Cyber Security · English · AV18-027Cisco security advisory

Cisco has released a security advisory to address vulnerabilities found in multiple products. Affected products: Cisco RV132W ADSL2+ Wireless-N VPN and RV134W VDSL2 Wireless-AC VPN Routers Cisco Virtualized Packet Core-Distributed Instance Cisco UCS Central Cisco Policy Suite RADIUS Cisco Unified Communications Manager Cisco Spark Cisco IOS XR Software Cisco IOS and IOS XE Software Diagnostic Shell Cisco Firepower System Software BitTorrent File Policy Cisco Email Security Appliance and Cisco Content Security Management Appliance Spam Quarantine Cisco Data Center Analytics Framework Cisco Unified Communications Manager Cisco Policy Suite Cisco Prime Network Cisco StarOS for Cisco ASR 5000 Series Aggregation Services Routers Cisco RV132W and RV134W Wireless VPN Routers CVE References: CVE-2018-0125, CVE-2018-0117, CVE-2018-0113, CVE-2018-0116, CVE-2018-0198, CVE-2018-0135, CVE-2018-0119, CVE-2018-0127, CVE-2018-0132, CVE-2018-0123, CVE-2018-0138, CVE-2018-0140, CVE-2018-0129, CVE-2018-0128, CVE-2018-0120, CVE-2018-0134, CVE-2018-0137, CVE-2018-0122

Official advisory ↗

CERT-FR · French · CERTFR-2019-AVI-086Multiples vulnérabilités dans IBM InfoSphere

De multiples vulnérabilités ont été découvertes dans IBM InfoSphere. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance et un déni de service à distance.

Official advisory ↗

CERT-FR · French · CERTFR-2018-AVI-076Multiples vulnérabilités dans les produits Cisco

De multiples vulnérabilités ont été découvertes dans les produits Cisco. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et un contournement de la politique de sécurité.

Official advisory ↗

JVN iPedia · Japanese · JVNDB-2018-002222Cisco RV132W ADSL2+ Wireless-N VPN および RV134W VDSL2 Wireless-AC VPN ルータにおける入力確認に関する脆弱性

Cisco RV132W ADSL2+ Wireless-N VPN および RV134W VDSL2 Wireless-AC VPN ルータには、入力確認に関する脆弱性が存在します。ベンダは、本脆弱性を Bug ID CSCvg92737 および CSCvh60170 として公開しています。

Official advisory ↗

KISA KrCERT/CC · Korean · KNVD-4867Cisco 제품군 취약점 보안 업데이트 권고

#### Cisco 제품군 취약점 보안 업데이트 권고 2018.02.12 ##### □ 개요 o Cisco社는 자사 제품에 대해 다수의 취약점을 해결한 보안 업데이트를 공지 o 공격자는 해당 취약점을 이용하여 피해를 발생시킬 수 있어 해당 Cisco 제품을 사용하는 이용자들은 최신 버전으로 업데이트 할 것을 권고 ##### □ 주요 내용 o Cisco RV132W ADSL2+ Wireless-N VPN과 RV134W VDSL2 Wireless-AC VPN 라우터의 웹 인터페이스에서 발생하는 원격 코드 실행 및 서비스 거부 취약점(CVE-2018-0125) [1] o Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) 소프트웨어에서 들어오는 패킷을 처리하는 과정에서 발생하는 서비스 거부 취약점(CVE-2018-0117) [2] o Cisco UCS Central의 운영 스크립트에서 임의 코드를 실행할 수 있는 취약점(CVE-2018-0113) [3] o Cisco Policy Suite의 RADIUS 인증 모듈에서 발생하는 인증 우회 취약점(CVE-2018-0116) [4] ##### □ 영향을 받는 시스템 o 참고사이트에 명시되어 있는 ‘Affected Products’을 통해 취약한 제품 확인 ##### □ 해결 방안 o 취약점이 발생한 Cisco 소프트웨어가 설치된 Cisco장비의 운영자는 해당사이트에 명시되어 있는 ‘Affected Products’ 내용을 확인하여 패치 적용 ##### □ 기타 문의사항 o 한국인터넷진흥원 인터넷침해대응센터: 국번없이 118 [참고사이트] [1] https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-rv13x [2] https://tools.cisco.com/security/center/conten

Official advisory ↗

Patch and workaround

Operational remediation based on structured source evidence.

Status ? Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.: Fix not verified
Affected: Cisco RV132W and RV134W: Cisco RV132W and RV134W
Fixed: No fixed version is explicitly recorded in the structured CVE data.
Action: No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround: No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.

Evidence and provenance

Published 8 Feb 2018 · Last source change 14 Jan 2026, 14:53 UTC · CWE-20 · Improper Input Validation

CVE recordCVE.org · 5.2

CVSS sourceNIST NVD

EPSS source

The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.

FIRST · tracked since 2026-09-01

European sourceENISA EUVD · EUVD-2018-0948

Product sourceCNA

Remediation sourceCVE/CNA references

CWE sourceCNA

NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗

14 Jan 2026, 14:53 UTC
Affected versionsThe structured affected or fixed version information changed.
Before
Cisco RV132W and RV134W · Fixed: No fixed version is explicitly recorded in the structured CVE data.
After
Cisco RV132W and RV134W: Cisco RV132W and RV134W · Fixed: No fixed version is explicitly recorded in the structured CVE data.
CNA ↗
14 Jan 2026, 14:53 UTC
Vendor guidanceAuthoritative vendor guidance changed from no authoritative guidance recorded to vendor advisory.
Before
no authoritative guidance recorded
After
vendor advisory
af854a3a-2127-422b-91ae-364da2661108 ↗
14 Jan 2026, 14:53 UTC
CVSS scoreCVSS scoring authority changed from CISA ADP to NIST NVD; the displayed base score remained 9.8.
Before
9.8 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
After
9.8 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
NIST NVD ↗
1 Sept 2026, 02:45 UTC
ENISA known-exploited stateENISA EUVD now records this CVE in its known-exploited dataset.
Before
not recorded
After
{"euvdId":"EUVD-2018-0948","listed":true,"sources":["cisa_kev"]}
ENISA EUVD ↗
1 Sept 2026, 02:42 UTC
ENISA EUVD mappingEUVD-2018-0948 was added to the official ENISA EUVD mapping for this CVE.
Before
not recorded
After
{"euvdId":"EUVD-2018-0948"}
ENISA EUVD ↗
14 Jan 2026, 14:53 UTC
Catalogue recordCVE added to the BlackTree catalogue.
CNA ↗

2018-02-08CVE published

2022-03-25Added to CISA KEV

ENISA EUVD · EUVD-2018-0948↗CISA KEV record↗Vendor advisory↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗

Technical terms and abbreviations used in this report

CVE: Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS: Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS: Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE: Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA: CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP: Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD: National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT: A computer security incident response team that publishes warnings or coordinates incident response.
PoC: Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF: Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL: Living off the land: abuse of legitimate tools or system functions during an attack.

Cisco VPN Routers Remote Code Execution Vulnerability

National CERT insights
?
CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

ENISA European Vulnerability Database

EUVD-2018-0948

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

What changed after publication

Cisco VPN Routers Remote Code Execution Vulnerability

National CERT insights ?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

EUVD-2018-0948

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

National CERT insights
?
CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.