CVE-2022-22536
CVE-2022-22536 is a security flaw in SAP products, SAP’s platform for running business applications. Attackers are using a flaw in SAP products. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 18 Aug 2022.[1]
SAP products 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. SAP has published a fix or advice.
Description
CISA calls it an HTTP request smuggling in SAP Multiple Products. In its words: “SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server and SAP Web Dispatcher allow HTTP request smuggling. An unauthenticated attacker can prepend a victim's request with arbitrary data, allowing for function execution impersonating the victim or poisoning intermediary Web caches.”[1]
The CVE record adds: “SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server 7.53 and SAP Web Dispatcher are vulnerable for request smuggling and request concatenation. An unauthenticated attacker can prepend a victim's request with arbitrary data. This way, the attacker can execute functions impersonating the victim or poison intermediary Web caches. A successful attack could result in complete compromise of Confidentiality, Integrity and Availability of the system.”[2]
The underlying weakness is CWE-444, in MITRE’s list of common software weaknesses.
It scores 10.0 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 doesn’t list version ranges for it; SAP’s advisory has them[3]. CISA names the product as SAP Multiple Products.
Most families won’t have SAP products; it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 18 Aug 2022, 190 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 8 Sep 2022 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 98%. 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
SAP has published a fix or advice.[3] CISA’s required action: “Apply updates per vendor instructions.”[1]
- Check whether you use it.SAP products 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 8 Sep 2022 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 10.0.[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 98%.[4] |
See also
Other SAP flaws
- CVE-2025-42999, SAP NetWeaver: deserialization ·
- CVE-2025-31324, SAP NetWeaver: unrestricted file upload ·
- CVE-2017-12637, SAP NetWeaver: directory traversal ·
- CVE-2019-0344, SAP Commerce Cloud: deserialization of untrusted data ·
- CVE-2021-38163, SAP NetWeaver: unrestricted file upload ·
Similar flaws
- CVE-2026-48710, Kludex Starlette: HTTP request/response smuggling ·
- CVE-2023-48365, Qlik Sense: HTTP tunneling ·
- CVE-2023-41265, Qlik Sense: HTTP tunneling ·
Added the same day
- CVE-2022-32894, Apple iOS and macOS: out-of-bounds write ·
- CVE-2022-32893, Apple iOS and macOS: out-of-bounds write ·
- CVE-2022-2856, Chrome and other Chromium browsers: insufficient input validation ·
- CVE-2022-26923, Microsoft Active Directory: domain services privilege escalation ·
- CVE-2022-21971, Microsoft Windows: runtime remote code execution ·
Every SAP flaw on CISA’s list · Everything added in August 2022
References
- ^ Cybersecurity and Infrastructure Security Agency. “SAP Multiple Products HTTP Request Smuggling Vulnerability”. Known Exploited Vulnerabilities Catalog, added 18 Aug 2022.
- ^ National Institute of Standards and Technology. “CVE-2022-22536 Detail”. National Vulnerability Database, published 9 Feb 2022.
- ^ SAP. Advisories and fixes: accounts.sap.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.979, percentile 99.9, 31 Oct 2026.
- CVE Program. “CVE-2022-22536”. 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.