# CVE-2015-4550: Security feature bypass in n/a

> Man-in-the-middle attackers can spoof IPSec and IKEv2 traffic on Cisco ASA devices by bypassing cryptographic integrity checks.

- **Severity:** Medium 4.3 (`AV:N/AC:M/Au:N/C:N/I:P/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Jun 2015
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-w7cf-c9rf-hghr

## What is CVE-2015-4550?

CVE-2015-4550 is a medium-severity vulnerability in Cisco Adaptive Security Appliance Software, published on 17 Jun 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Cavium cryptographic-module firmware on Cisco Adaptive Security Appliance (ASA) devices with software 9.3(3) and 9.4(1.1) does not verify the AES-GCM Integrity Check Value (ICV) octets, which makes it easier for man-in-the-middle attackers to spoof IPSec and IKEv2 traffic by modifying packet data, aka Bug ID CSCuu66218.

Weakness: CWE-310

## Which versions are affected by CVE-2015-4550?

It affects 1 product.


Products: Cisco Adaptive Security Appliance Software.

## How do I fix CVE-2015-4550?

No fix has been published for CVE-2015-4550 yet. Limit exposure of the affected software until one is available.

## Is CVE-2015-4550 being exploited?

There is no known exploitation of CVE-2015-4550 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Adaptive Security Appliance Software

- [CVE-2025-20333](https://insights.sbomify.com/CVE-2025-20333/): Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Buffer Overflow (critical 9.9, exploited in the wild)
- [CVE-2016-6366](https://insights.sbomify.com/CVE-2016-6366/): Cisco Adaptive Security Appliance (ASA) SNMP Buffer Overflow (high 8.8, exploited in the wild)
- [CVE-2026-20349](https://insights.sbomify.com/CVE-2026-20349/): Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection (high 8.6, exploited in the wild)
- [CVE-2024-20353](https://insights.sbomify.com/CVE-2024-20353/): Cisco ASA and FTD Denial of Service (high 8.6, exploited in the wild)
- [CVE-2016-6367](https://insights.sbomify.com/CVE-2016-6367/): Cisco Adaptive Security Appliance (ASA) CLI Remote Code Execution (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-4550 and fix it if it is affected.

What it is: CVE-2015-4550 is a medium-severity vulnerability in Cisco Adaptive Security Appliance Software, published on 17 Jun 2015. 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-2015-4550 in the wild and no public exploit code.

Affected product: Cisco Adaptive Security Appliance Software. 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-2015-4550/ (Markdown: https://insights.sbomify.com/CVE-2015-4550/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-4550
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-4550
- OSV: https://osv.dev/vulnerability/CVE-2015-4550

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From sbomify Insights: https://insights.sbomify.com/CVE-2015-4550/
Summaries are generated and may contain mistakes; the official description above is the record.