CVE-2023-38035
CVE-2023-38035 is a security flaw in Ivanti Sentry, Ivanti’s IT management and remote-access software. Attackers can get into Ivanti Sentry 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 22 Aug 2023, and says ransomware gangs have used it.[1]
Ivanti Sentry 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. Fixed in version 9.18.0 and below of MobileIron Sentry.
Description
CISA calls it an authentication bypass in Ivanti Sentry. In its words: “Ivanti Sentry, formerly known as MobileIron Sentry, contains an authentication bypass vulnerability that may allow an attacker to bypass authentication controls on the administrative interface due to an insufficiently restrictive Apache HTTPD configuration.”[1]
The underlying weakness is incorrect authorization (CWE-863), in MITRE’s list of common software weaknesses.[2]
It scores 9.8 out of 10 on the Common Vulnerability Scoring System, which rates it critical, scored by NVD using CVSS 3.1.[2]
Affected versions
NVD’s record lists one fixed version: everything before it is affected.[2]
| Product | Fixed in |
|---|---|
| MobileIron Sentry | 9.18.0 and below |
Most families won’t have Ivanti Sentry; it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 22 Aug 2023, within a day of it being made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 12 Sep 2023 to fix it.[1] CISA says ransomware gangs have used it.
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 or discontinue use of the product if mitigations are unavailable.”[1]
- Check whether you use it.Ivanti Sentry 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 (fixed in version 9.18.0 and below of MobileIron Sentry), or not in use. CISA gave US government agencies until 12 Sep 2023 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 9.8.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks, noting that ransomware gangs have used it.[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 Sentry flaws
- CVE-2026-10520: OS command injection ·
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-2026-6973, Ivanti Endpoint Manager Mobile (EPMM): improper input validation ·
- CVE-2026-1340, Ivanti Endpoint Manager Mobile (EPMM): code injection ·
Other incorrect authorization flaws
- CVE-2026-71362, Adobe Commerce and Magento: incorrect authorization ·
- CVE-2026-42016, JFrog Artifactory: incorrect authorization ·
- CVE-2025-54253, Adobe Experience Manager (AEM) Forms: experience manager forms code execution ·
- CVE-2025-55177, Meta Platforms WhatsApp: incorrect authorization ·
- CVE-2025-21480, Qualcomm Multiple Chipsets: incorrect authorization ·
Added the same day
- CVE-2023-27532, Veeam Backup & Replication: cloud connect missing authentication for critical function ·
Every Ivanti flaw on CISA’s list · Everything added in August 2023
References
- ^ Cybersecurity and Infrastructure Security Agency. “Ivanti Sentry Authentication Bypass Vulnerability”. Known Exploited Vulnerabilities Catalog, added 22 Aug 2023.
- ^ National Institute of Standards and Technology. “CVE-2023-38035 Detail”. National Vulnerability Database, published 21 Aug 2023.
- ^ Ivanti. Advisories and fixes: forums.ivanti.com, forums.ivanti.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 1.000, percentile 100.0, 31 Oct 2026.
- CVE Program. “CVE-2023-38035”. 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.