# CVE-2025-70888: Privilege escalation in n/a

> A remote attacker can escalate privileges in the osslsigncode tool, requiring users to upgrade to a patched version.

- **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:** Yes
- **Published:** 25 Mar 2026
- **Updated:** 28 Mar 2026
- **Also known as:** DEBIAN-CVE-2025-70888, GHSA-m387-6h4v-93hp, UBUNTU-CVE-2025-70888, openSUSE-SU-2026:10482-1, openSUSE-SU-2026:20473-1

## What is CVE-2025-70888?

CVE-2025-70888 is a critical vulnerability in n/a, published on 25 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue in mtrojnar Osslsigncode affected at v2.10 and before allows a remote attacker to escalate privileges via the osslsigncode.c component

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2025-70888?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `osslsigncode` | openSUSE:Leap 16.0 | All versions | 2.13-bp160.1.1 |
| `osslsigncode` | openSUSE:Tumbleweed | All versions | 2.13-1.1 |

Products: Osslsigncode Project Osslsigncode.

## How do I fix CVE-2025-70888?

Upgrade to a fixed version.

## Is CVE-2025-70888 being exploited?

There is no known exploitation of CVE-2025-70888 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2026-39853](https://insights.sbomify.com/CVE-2026-39853/): osslsigncode has a Stack Buffer Overflow via Unbounded Digest Copy During Signature Verification (high 7.8)
- [CVE-2023-36377](https://insights.sbomify.com/CVE-2023-36377/): Memory corruption in n/a (high 7.8)
- [CVE-2026-39855](https://insights.sbomify.com/CVE-2026-39855/): osslsigncode has an Integer Underflow in PE Page Hash Calculation Can Cause Out-of-Bounds Read (medium 5.5)
- [CVE-2026-39856](https://insights.sbomify.com/CVE-2026-39856/): osslsigncode has an Out-of-Bounds Read via Unvalidated Section Bounds in PE Page Hash Calculation (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-70888 and fix it if it is affected.

What it is: CVE-2025-70888 is a critical vulnerability in n/a, published on 25 Mar 2026. 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-2025-70888 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-2025-70888/ (Markdown: https://insights.sbomify.com/CVE-2025-70888/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-70888
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-70888
- OSV: https://osv.dev/vulnerability/CVE-2025-70888

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-70888/
Summaries are generated and may contain mistakes; the official description above is the record.