CVE-2022-31793
High PUBLISHEDdo_request in request.c in muhttpd before 1.1.7 allows remote attackers to read arbitrary files by constructing a URL with a single character...
Not yet in CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
do_request in request.c in muhttpd before 1.1.7 allows remote attackers to read arbitrary files by constructing a URL with a single character before a desired path on the filesystem. This occurs because the code skips over the first character when serving files. Arris NVG443, NVG599, NVG589, and NVG510 devices and Arris-derived BGW210 and BGW320 devices are affected.
- CVE Published
- Aug 04, 2022
- Exploitation Reported
- Aug 04, 2022
- CVSS
- 7.5 High
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| n/a |
n/a
|
n/a |
Affected |
CVE References
- inglorion.net/software/muhttpd inglorion.net · CVE Record http://inglorion.net/software/muhttpd/
- kb.cert.org/vuls/id/495801 kb.cert.org · CVE Record https://kb.cert.org/vuls/id/495801
- derekabdine.com/blog/2022-arris-advisory derekabdine.com · CVE Record https://derekabdine.com/blog/2022-arris-advisory
- blog.malwarebytes.com/exploits-and-vulnerabilities/2022/08/million... blog.malwarebytes.com · CVE Record https://blog.malwarebytes.com/exploits-and-vulnerabilities/2022/08/mi...
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| The Shadowserver First | 2022-08-04 21:55 UTC |
Scanner Artifacts
Nuclei and Metasploit references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/network/cves/2022/CVE-2022-31793.yaml | Apr 25, 2025 |
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users via the Pro API.
Learn About Virtual PatchesCVSS Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploitation Status
Exploited in the wild
Recorded 2022-08-04 21:55:05 UTC · The Shadowserver
Proof of concept available
Recorded 2022-08-19 01:42:08 UTC · GitHub
Weaknesses (CWE)
-
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/network/cves/2022/CVE-2022-31793.yaml | Apr 25, 2025 |
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2022-08-19 01:42:08 UTC · 1 stars
nuclei · Created Unknown
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
00:00 UTC about 1 year ago00:00 UTC · about 1 year ago
Nuclei template available
Scanner coverage available
-
01:42 UTC almost 4 years ago01:42 UTC · almost 4 years ago
Public PoC available
Public proof-of-concept code published
-
21:55 UTC almost 4 years ago21:55 UTC · almost 4 years ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
21:55 UTC almost 4 years ago21:55 UTC · almost 4 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC about 4 years ago00:00 UTC · about 4 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2022-31793
{
"cve_id": "CVE-2022-31793",
"title": "do_request in request.c in muhttpd before 1.1.7 allows remote attackers to re...",
"affected_vendor": "Arris",
"affected_product": "muhttpd",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 7.5,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}