CVE-2022-32206 — curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can...
curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable "links" in this "decompression chain" was unbounded, allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a "malloc bomb", makingcurl end up spending enormous amounts of allocated heap memory, or trying toand returning out of memory errors.
Who exploits it and how urgent it is
A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.
How the score was calculated
- EPSS 33.1% (30-day exploitation probability)+15
- Technical severity (medium)+3
- CISA SSVC: exploitation "poc"+5
The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.
CISA SSVC assessment CISA
Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.
Remediation
Fixes and mitigations documented by the sources — linked to the original advisory.
- Documented patch — cert-portal.siemens.com (NIST National Vulnerability Database)
First 24 hours
Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.
- Identify exposed assets running the affected vendor/product/version combinations (Debian Debian Linux, Fedoraproject Fedora, Haxx Curl…).
- The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
- Apply the fixed version or the patch documented under Remediation.
- Exploitation requires user interaction: tighten email/web filtering and warn affected users.
- EPSS ahead of 98% of scored CVEs: prioritize it in the patch queue.
- Search available logs for exploit probes matching the vulnerability class (denial of service), errors and authentication anomalies.
Affected scope
Vendor, product and versions as the sources word them.
| Vendor | Product | Versions | Status | Source |
|---|---|---|---|---|
| Debian | Debian Linux | version 10.0version 11.0 | Vulnerable | NIST National Vulnerability Database |
| Fedoraproject | Fedora | version 35 | Vulnerable | NIST National Vulnerability Database |
| Haxx | Curl | < 7.84.0 | Vulnerable | NIST National Vulnerability Database |
| Netapp | Bootstrap Os | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Clustered Data Ontap | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Element Software | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | H300s Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | H410s Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | H500s Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | H700s Firmware | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Hci Management Node | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Netapp | Solidfire | versions not specified by the source | Vulnerable | NIST National Vulnerability Database |
| Siemens | Scalance Sc622-2c Firmware | < 3.0 | Vulnerable | NIST National Vulnerability Database |
| Siemens | Scalance Sc626-2c Firmware | < 3.0 | Vulnerable | NIST National Vulnerability Database |
| Siemens | Scalance Sc632-2c Firmware | < 3.0 | Vulnerable | NIST National Vulnerability Database |
| Siemens | Scalance Sc636-2c Firmware | < 3.0 | Vulnerable | NIST National Vulnerability Database |
| Siemens | Scalance Sc642-2c Firmware | < 3.0 | Vulnerable | NIST National Vulnerability Database |
| Siemens | Scalance Sc646-2c Firmware | < 3.0 | Vulnerable | NIST National Vulnerability Database |
| Splunk | Universal Forwarder | version 9.1.0≥ 9.0.0 and < 9.0.6≥ 8.2.0 and < 8.2.12 | Vulnerable | NIST National Vulnerability Database |
Attack characteristics
The CVSS vector, decoded. It describes the attack, not your exposure to it.
Every base score collected
Sources score independently and may disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Scored by |
|---|---|---|---|---|---|
| 6.5 | CVSS 3.1 | Medium | 2.8 | 3.6 | nvd@nist.gov via NIST National Vulnerability Database |
| 6.5 | CVSS 3.1 | Medium | 2.8 | 3.6 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 via NIST National Vulnerability Database |
| 6.5 | CVSS 3.1 | Medium | — | — | GitHub, Inc. via GitHub Security Advisories |
| 6.5 | CVSS 3.1 | Medium | — | — | CISA-ADP via CVE Program (cve.org) e CISA ADP |
| 4.3 | CVSS 2.0 | Medium | 8.6 | 2.9 | nvd@nist.gov via NIST National Vulnerability Database |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H (score shown at the top: nvd@nist.gov) Weakness MITRE
Weakness class according to MITRE’s CWE catalog.
CWE-770 · Allocation of Resources Without Limits or Throttling
Detection
Read off the CVSS vector and the weakness class. Starting points, not tested rules.
- Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
- Track CPU/memory spikes and availability drops correlated with request patterns.
Timeline
What happened to this CVE, newest first.
- 2026
- SSVC assessment updated
- Record published
- Fix documented
- Affected products added · haxx/curl, fedoraproject/fedora, debian/debian linux, netapp/clustered data ontap, netapp/element software, netapp/hci m
- CVSS changed · 6.5
- Source status changed · → Modified
- Record created in this database
- 2022
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 2× References added · Oct 14, 2026 – Oct 14, 2026
- 1× Official description updated · Oct 14, 2026 – Oct 14, 2026
References
21 on the record
- cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf
- github.com/advisories/GHSA-pphv-gw4r-gww8
- nvd.nist.gov/vuln/detail/CVE-2022-32206
- security.netapp.com/advisory/ntap-20220915-0003
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BEV6BR
- www.debian.org/security/2022/dsa-5197
- www.openwall.com/lists/oss-security/2023/02/15/3
- security.netapp.com/advisory/ntap-20220915-0003/
- lists.debian.org/debian-lts-announce/2022/08/msg00017.html
- seclists.org/fulldisclosure/2022/Oct/28
- seclists.org/fulldisclosure/2022/Oct/41
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEV6
- cert-portal.siemens.com/productcert/html/ssa-419740.html
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEV6
- cert-portal.siemens.com/productcert/html/ssa-942865.html
- cert-portal.siemens.com/productcert/html/ssa-558014.html
- cert-portal.siemens.com/productcert/html/ssa-398330.html
- hackerone.com/reports/1570651
- security.gentoo.org/glsa/202212-01
- cert-portal.siemens.com/productcert/html/ssa-333517.html
- support.apple.com/kb/HT213488
Elsewhere on this site
Related CVEs (same products)
- High CVE-2026-82209 Insertion of Sensitive Information Into Sent Data in Haxx Curl Sep 6, 2026
- High CVE-2026-80229 Use After Free in Haxx Curl Sep 6, 2026
- High CVE-2026-80230 Improper Certificate Validation in Haxx Curl Sep 6, 2026
- High CVE-2026-80231 A flaw in libcurl makes it wrongly reuse an existing HTTPS connection setup for a given… Sep 6, 2026
- High CVE-2026-82208 Improper Certificate Validation in Haxx Curl Sep 6, 2026
- High CVE-2026-80255 Insertion of Sensitive Information Into Sent Data in Haxx Curl Sep 6, 2026
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.
Answered from this record
Text assembled only from the fields above — no additional claims.
What should defenders know first?
CVE-2022-32206 is "curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can...", rated Medium. It affects Debian Linux (Debian); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 6.5 describes technical severity. EPSS 33.10% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.
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