CVE-2022-31793
CVE-2022-31793 is a high-severity vulnerability in Inglorion Muhttpd with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 16% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 16% (97th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-22
- Affected product: Inglorion Muhttpd
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2022-31793?
- 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.
- How severe is CVE-2022-31793?
- CVE-2022-31793 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2022-31793 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-31793?
- CVE-2022-31793 primarily affects Inglorion Muhttpd. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2022-31793?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2022-31793 published?
- CVE-2022-31793 was published on 2022-08-04 and last updated on 2026-06-17.
References
- http://inglorion.net/software/muhttpd/
- https://blog.malwarebytes.com/exploits-and-vulnerabilities/2022/08/millions-of-arris-routers-are-vulnerable-to-path-traversal-attacks/
- https://derekabdine.com/blog/2022-arris-advisory
- https://kb.cert.org/vuls/id/495801
- https://www.kb.cert.org/vuls/id/495801
Affected products (7)
- cpe:2.3:a:inglorion:muhttpd:*:*:*:*:*:*:*:*
- cpe:2.3:o:arris:nvg443_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:arris:nvg599_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:arris:nvg589_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:arris:nvg510_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:arris:bgw210_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:arris:bgw320_firmware:-:*:*:*:*:*:*:*
Other CWE-22 (Path Traversal) vulnerabilities
- CVE-2026-76606 — Critical (CVSS 10.0): Joomla Extension - fabrikar.com - Path Traversal via image element in Fabrik < 4.7.3 - ???.
- CVE-2026-18051 — Critical (CVSS 10.0): The W3 Total Cache WordPress plugin before 2.10.5 does not properly validate the request path it uses to build cache…
- CVE-2026-74764 — Critical (CVSS 10.0): Pandora contains a path traversal vulnerability in its TAR archive extraction functionality. When processing a…
- CVE-2026-16940 — Critical (CVSS 10.0): The Custom Fields WordPress plugin before 1.5.1 does not validate a user-supplied file path before deletion, allowing…
- CVE-2026-67429 — Critical (CVSS 10.0): Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.6, image.download and related…
- CVE-2026-59555 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Deletion in Participants Database <= 2.7.8.3 versions.