CVE-2025-4427
CVE-2025-4427 is a security flaw in Ivanti Endpoint Manager Mobile (EPMM), software companies use to manage staff phones. Attackers can get into Ivanti Endpoint Manager Mobile (EPMM) without a valid password. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 19 May 2025.[1]
Ivanti Endpoint Manager Mobile (EPMM) is business software or equipment. Most families won’t have it, but attackers break into it to get inside companies, and from there to what those companies hold about their customers, patients and staff. Ivanti has published a fix or advice.
Description
CISA calls it an authentication bypass in Ivanti Endpoint Manager Mobile (EPMM). In its words: “Ivanti Endpoint Manager Mobile (EPMM) contains an authentication bypass vulnerability in the API component that allows an attacker to access protected resources without proper credentials via crafted API requests. This vulnerability results from an insecure implementation of the Spring Framework open-source library.”[1]
The underlying weakness is authentication bypass (CWE-288), in MITRE’s list of common software weaknesses.[2]
It scores 7.5 out of 10 on the Common Vulnerability Scoring System, which rates it high, scored by NVD using CVSS 3.1.[2]
Affected versions
NVD’s record doesn’t list version ranges for it; Ivanti’s advisory has them[3]. CISA names the product as Ivanti Endpoint Manager Mobile (EPMM).
Most families won’t have Ivanti Endpoint Manager Mobile (EPMM); it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 19 May 2025, 6 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 9 Jun 2025 to fix it.[1]
FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at over 99%. That’s in the top 1% of the flaws it scores.[4]
CISA assesses it as automatable: attackers can run it against many targets at once.
CISA doesn’t say who was attacked, or how.
Fix
Ivanti has published a fix or advice.[3] CISA’s required action: “Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.”[1]
- Check whether you use it.Ivanti Endpoint Manager Mobile (EPMM) is business software or equipment, so most families won’t have it. If you run a business, or work from home on company equipment, ask whoever looks after your IT.
- Send this page to your IT person.Ask them to confirm it’s fixed, or not in use. CISA gave US government agencies until 9 Jun 2025 to fix it.
- If it can’t be fixed, take it offline.CISA’s advice when there’s no fix is to stop using the product, or take it off the internet, until there is one.
You can’t fix someone else’s server, but you can watch for what follows a break-in like this: a breach notice, a password reset you didn’t ask for, or a scam message that knows things it shouldn’t. HARD watches for those for you and your family.
Timeline
| Date | Event |
|---|---|
| The flaw is made public in the National Vulnerability Database, with a severity score of 7.5.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks.[1] | |
| CISA’s deadline for US government agencies to fix it.[1] | |
| FIRST puts the odds of it being used in attacks in the next 30 days at over 99%.[4] |
See also
Other Ivanti Endpoint Manager Mobile (EPMM) flaws
- CVE-2026-6973: improper input validation ·
- CVE-2026-1340: code injection ·
- CVE-2026-1281: code injection ·
- CVE-2025-4428: code injection ·
- CVE-2023-35081: path traversal ·
- CVE-2023-35078: endpoint manager mobile authentication bypass ·
Other Ivanti flaws
- CVE-2026-118527, Ivanti Connect Secure: generation of predictable numbers or identifiers ·
- CVE-2026-111357, Ivanti Connect Secure: missing authentication for critical function ·
- CVE-2026-104935, Ivanti Connect Secure: authentication bypass by spoofing ·
- CVE-2026-10520, Ivanti Sentry: OS command injection ·
- CVE-2026-1603, Ivanti Endpoint Manager (EPM): authentication bypass ·
Other authentication bypass flaws
- CVE-2026-20079, Cisco Secure Firewall Management Center (FMC) and Security Cloud Control (SCC) Firewall Management: firewall management center authentication bypass using an alternate path or channel ·
- CVE-2026-19490, Citrix NetScaler: authentication bypass using an alternate path or channel ·
- CVE-2026-18556, N-able N-central: authentication bypass using an alternate path or channel ·
- CVE-2026-18577, N-able N-central: authentication bypass using an alternate path or channel ·
- CVE-2026-24858, Fortinet products: authentication bypass using an alternate path or channel ·
Added the same day
- CVE-2025-4428, Ivanti Endpoint Manager Mobile (EPMM): code injection ·
- CVE-2025-27920, Srimax Output Messenger: directory traversal ·
- CVE-2024-27443, Synacor Zimbra Collaboration Suite (ZCS): cross-site scripting (XSS) ·
- CVE-2024-11182, MDaemon Email Server: cross-site scripting (XSS) ·
- CVE-2023-38950, ZKTeco BioTime: path traversal ·
Every Ivanti flaw on CISA’s list · Everything added in May 2025
References
- ^ Cybersecurity and Infrastructure Security Agency. “Ivanti Endpoint Manager Mobile (EPMM) Authentication Bypass Vulnerability”. Known Exploited Vulnerabilities Catalog, added 19 May 2025.
- ^ National Institute of Standards and Technology. “CVE-2025-4427 Detail”. National Vulnerability Database, published 13 May 2025.
- ^ Ivanti. Advisories and fixes: forums.ivanti.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.999, percentile 100.0, 31 Oct 2026.
- CVE Program. “CVE-2025-4427”. The official CVE record.
This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.