# CVE-2021-27514: Auth bypass in n/a

> Attackers can brute-force short session IDs to bypass authentication in EyesOfNetwork, potentially gaining unauthorized access to the system.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Feb 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-v598-3w4j-2787

## What is CVE-2021-27514?

CVE-2021-27514 is a critical authentication bypass vulnerability in n/a, published on 21 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

EyesOfNetwork 5.3-10 uses an integer of between 8 and 10 digits for the session ID, which might be leveraged for brute-force authentication bypass (such as in CVE-2021-27513 exploitation).

Weakness: CWE-307 (Improper Restriction of Excessive Authentication Attempts)

## Which versions are affected by CVE-2021-27514?

It affects 1 product.


Products: Eyesofnetwork Eyesofnetwork.

## How do I fix CVE-2021-27514?

No fix has been published for CVE-2021-27514 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-27514 being exploited?

There is no known exploitation of CVE-2021-27514 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2020-8657](https://insights.sbomify.com/CVE-2020-8657/): EyesOfNetwork Use of Hard-Coded Credentials (critical 9.8, exploited in the wild)
- [CVE-2020-8655](https://insights.sbomify.com/CVE-2020-8655/): EyesOfNetwork Improper Privilege Management (high 7.8, exploited in the wild)
- [CVE-2022-41572](https://insights.sbomify.com/CVE-2022-41572/): Privilege escalation in n/a (critical 9.8)
- [CVE-2022-41570](https://insights.sbomify.com/CVE-2022-41570/): SQL injection in n/a (critical 9.8)
- [CVE-2022-41571](https://insights.sbomify.com/CVE-2022-41571/): Path traversal in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-27514 and fix it if it is affected.

What it is: CVE-2021-27514 is a critical authentication bypass vulnerability in n/a, published on 21 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-27514 in the wild and no public exploit code.

Affected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-27514/ (Markdown: https://insights.sbomify.com/CVE-2021-27514/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-27514
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-27514
- OSV: https://osv.dev/vulnerability/CVE-2021-27514

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-27514/
Summaries are generated and may contain mistakes; the official description above is the record.