CVE-2019-12650 / Cisco CISCO-SA-20190925-WEBUI-CMD-INJECTION: Cisco IOS XE Software Web UI Command Injection Vulnerabilities

Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified

What, why and how

Multiple vulnerabilities in the web-based user interface (Web UI) of Cisco IOS XE Software could allow an authenticated, remote attacker to execute commands with elevated privileges on the affected device. For more information about these vulnerabilities, see the Details section of this advisory.

What

Why

Untrusted input reaches a command interpreter without sufficient validation or separation from command syntax.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may execute code or commands in the affected security context.

What

Why

Untrusted input reaches a command interpreter without sufficient validation or separation from command syntax.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may execute code or commands in the affected security context.

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.

No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

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 Neutralization of Special Elements used in a Command ('Command Injection') → execute code or commands in the affected security context
Attack surface: Network
Privileges required: Low: a basic authenticated account is required
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-77 ↗
CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection'). The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
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:L/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.PRLowPrivileges required: The attacker needs basic user-level 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.

NetworkRemote code executionPrivilege escalationCWE-77

Official authority intelligence

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

ENISA EUVD · EUVD-2019-4241Official EUVD mapping

0 linked advisory records.

Official EUVD record ↗

CERT-FR · French · CERTFR-2019-AVI-468Multiples 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-2019-010362Cisco IOS XE ソフトウェアにおける OS コマンドインジェクションの脆弱性

Cisco IOS XE ソフトウェアには、OS コマンドインジェクションの脆弱性が存在します。

Official advisory ↗

KISA KrCERT/CC · Korean · KNVD-5050Cisco 제품 취약점 보안 업데이트 권고

#### Cisco 제품 취약점 보안 업데이트 권고 2019.09.30 ##### □ 개요 o Cisco社는 자사 제품의 취약점을 해결한 보안 업데이트 공지 o 공격자는 해당 취약점을 이용하여 커맨드 인젝션 등의 피해를 발생시킬 수 있으므로, 해당 제품을 사용하는 이용자들은 최신 버전으로 업데이트 권고 ##### □ 주요 내용 o Cisco IOS XE 소프트웨어에서 특정 FTP 트래픽을 검사할 때 버퍼오버플로우로 인해 발생하는 서비스거부 취약점(CVE-2019-12646, 12655) [1][9] o Cisco Catalyst 4000 시리즈 스위치에서 부적절한 자원할당으로 인해 발생하는 서비스 거부 취약점(CVE-2019-12652) [2] o Cisco IOS Software의 IOx 어플리케이션에서 잘못된 접근통제로 인해 비허가된 사용자가 시스템에 접근 가능한 취약점(CVE-2019-12648) [3] o Cisco IOS XE 소프트웨어의 웹 인터페이스에서 발생하는 커맨드 인젝션 취약점(CVE-2019-12650, 12651) [4] o Cisco IOS 및 IOS XE 소프트웨어의 SIP(Session Initiation 프로토콜)에서 내부 데이터 구조에 대한 미흡한 위생처리로 인해 발생하는 서비스거부 취약점(CVE-2019-12654) [5] o Cisco IOS XE 소프트웨어에서 Raw Socket Transport 페이로드를 부적절하게 파싱하여 발생하는 서비스거부 취약점(CVE-2019-12653) [6] o Cisco IOS XE 소프트웨어에서 파일시스템 자원에 대한 관리가 미흡하여 발생하는 서비스거부 취약점(CVE-2019-12658) [7] o Cisco IOx 어플리케이션에서 TLS(Transport Layer Security) 문제로 인해 발생하는 서비스거부 취약점(CVE-2019-12656) [8] o Cisco IOS XE 소프트웨어에서 IPv6 패킷에 대한 처리가 미흡하여 발생하는 서비스거부 취약점(CVE-2019-12657) [10] o Cisco IOS 및 IOS XE 소프트웨어에서 널 포인터 역참조로 인해 발생하는 서비스거부 취약점(CVE-2019-12647) [11] ##### □ 영향을 받는 제품 o Cisco IOS XE 소프트웨어 - Cisco 1100, 4200, 4300 Integrated Services Rout

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 IOS XE Software 3.2.11aSG: unspecified < n/a
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 25 Sept 2019 · Last source change 21 Nov 2024, 19:14 UTC · CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')

CVE recordCVE.org · 5.1

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-2019-4241

Product sourceCNA

Remediation sourceCVE/CNA references

CWE sourceCNA

NVD statusNVD modified after enrichment

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

Material change intelligence

What changed after publication

View recent updates ↗

1 Sep 2026, 02:42 UTC
ENISA EUVD mappingEUVD-2019-4241 was added to the official ENISA EUVD mapping for this CVE.
Before
not recorded
After
{"euvdId":"EUVD-2019-4241"}
ENISA EUVD ↗
21 Nov 2024, 19:14 UTC
CVSS scoreCVSS score changed from 7.6 (CVSS 3.0 · CNA · CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H) to 8.8 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
Before
7.6 (CVSS 3.0 · CNA · CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H)
After
8.8 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
NIST NVD ↗
21 Nov 2024, 19:14 UTC
Catalogue recordCVE added to the BlackTree catalogue.
CNA ↗

2019-09-25CVE published

ENISA EUVD · EUVD-2019-4241↗CVE authority or vendor reference · Cisco CISCO-SA-20190925-WEBUI-CMD-INJECTION↗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 IOS XE Software Web UI Command Injection Vulnerabilities

Published severity in operational context

Evidence used

Compensating controls

Verification

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-2019-4241

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

What changed after publication