---
title: "CVE-2026-102010: GCC - Use After Free"
description: "GCC libstdc++ contains a use-after-free caused by failure to update internal entry pointer after reallocating storage in erase_if function on binary heap priority queue, letting attackers cause denial of service or memory corruption, exploit requires triggering erase_if operation."
url: https://panop.io/threat-heartbeat/CVE-2026-102010/
---

# CVE-2026-102010 GCC - Use After Free

GCC libstdc++ contains a use-after-free caused by failure to update internal entry pointer after reallocating storage in erase\_if function on binary heap priority queue, letting attackers cause denial of service or memory corruption, exploit requires triggering erase\_if operation.

CVSS base score 7.0 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.25% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-102010)

## Details

Type

Use After Free

Impact

Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H

Published

28 September 2026

Updated

15 October 2026

Weakness

[CWE-825](https://cwe.mitre.org/data/definitions/825.html)

## Vendor fix

Update to the latest version of GCC with the fix applied.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-102010](https://nvd.nist.gov/vuln/detail/CVE-2026-102010)
- [https://access.redhat.com/errata/RHSA-2026:73642](https://access.redhat.com/errata/RHSA-2026:73642)
- [https://access.redhat.com/errata/RHSA-2026:74569](https://access.redhat.com/errata/RHSA-2026:74569)
- [https://access.redhat.com/security/cve/CVE-2026-102010](https://access.redhat.com/security/cve/CVE-2026-102010)
- [https://bugzilla.redhat.com/show\_bug.cgi?id=2478395](https://bugzilla.redhat.com/show_bug.cgi?id=2478395)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)