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NVD / CVE Program· CNA redhat

CVE-2026-102010: Gcc-toolset-15-gcc: gcc: gcc-toolset-16: gcc: denial of service via use-after-free in binary heap erase_if

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.34% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: azl3 gcc 13.2.0-7 on Azure Linux 3.0 Release Notes.

Low priority for now. Upgrade to azl3 gcc 13.2.0-7 on Azure Linux 3.0 Release Notes or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in GCC. When an application calls the erase_if function on a binary heap priority queue in libstdc++, the library reallocates storage but fails to update its internal entry pointer. An attacker capable of triggering this operation can exploit this use-after-free condition, leading to a Denial of Service (DoS) via an application crash or potential memory corruption.

HighCVSS 7.0 · v3.1—No exploit Fix available
Published
Sep 28, 2026
Updated
Nov 6, 2026
EPSS
0.3% · 27th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
7.0
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Red Hat Enterprise Linux 10

    • 0:15.2.1-7.1.el10_2 and laternot affected · rpm
    • all versionsaffected
    • all versionsunknown
    • all versionsaffected
    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsaffected
    • all versionsaffected
    • all versionsaffected
    • all versionsaffected
    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsaffected
    • all versionsaffected
    • all versionsaffected
    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 8

    • 0:8.5.0-30.el8_10 and laternot affected · rpm
    • 0:15.2.1-7.2.el8_10 and laternot affected · rpm
    • 0:8.5.0-30.el8_10 and laternot affected · rpm
    • all versionsunknown
    • all versionsaffected
    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 9

    • all versionsaffected
    • all versionsaffected
    • all versionsaffected
    • all versionsunknown
    • all versionsaffected
    • all versionsaffected

  • Red Hat Red Hat Hardened Images

    • 13.5.0-0.2.hum1 and laternot affected · rpm
    • 16.2.1-3.hum1 and laternot affected · rpm
    • 16.2.1-3.2.hum1 and laternot affected · rpm

  • Red Hat Red Hat OpenShift AI (RHOAI)

    • all versionsunknown
    • all versionsunknown
    • all versionsunknown
    • all versionsunknown
    • all versionsunknown
    • all versionsunknown
    • all versionsunknown
    • all versionsunknown
    • all versionsunknown
    • all versionsunknown

  • Red Hat Red Hat OpenShift Container Platform 4

    • all versionsunknown
    • all versionsaffected

  • Red Hat Red Hat OpenShift Container Platform 5

    • all versionsaffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10gcc-toolset-15-gccbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-gcc-c++before 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-gcc-gfortranbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-gcc-plugin-annobinbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-gcc-plugin-develbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-libasan-develbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-libatomic-develbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-libgccjitbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-libgccjit-develbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-libitm-develbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-liblsan-develbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-libquadmath-develbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-libstdc++-develbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-libstdc++-docsbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-libtsan-develbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-libubsan-develbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:10gcc-toolset-15-offload-nvptxbefore 15.2.1-7.1.el10_2.alma.115.2.1-7.1.el10_2.alma.1
AlmaLinux:8cppbefore 8.5.0-30.el8_10.alma.18.5.0-30.el8_10.alma.1
AlmaLinux:8gccbefore 8.5.0-30.el8_10.alma.18.5.0-30.el8_10.alma.1
AlmaLinux:8gcc-c++before 8.5.0-30.el8_10.alma.18.5.0-30.el8_10.alma.1
AlmaLinux:8gcc-gdb-pluginbefore 8.5.0-30.el8_10.alma.18.5.0-30.el8_10.alma.1
AlmaLinux:8gcc-gfortranbefore 8.5.0-30.el8_10.alma.18.5.0-30.el8_10.alma.1
AlmaLinux:8gcc-offload-nvptxbefore 8.5.0-30.el8_10.alma.18.5.0-30.el8_10.alma.1
AlmaLinux:8gcc-plugin-annobinbefore 8.5.0-30.el8_10.alma.18.5.0-30.el8_10.alma.1

+96

Same product

red hat: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-10230Samba: command injection in wins server hook script
    52Plan
  • CVE-2026-4631Cockpit: cockpit: unauthenticated remote code execution due to ssh command-line argument injection
    44Plan
  • CVE-2026-76578Ipa: freeipa: freeipa: unauthenticated ldap client can obtain administrator credentials via the self-managed-token aci
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-96283Sep 27, 2026 · Flatpak: flatpak: flatpak-system-helper cross-user cancelpull orphans another user's ongoing pull
    13Monitor
  • ← EarlierCVE-2026-96284Sep 27, 2026 · Flatpak: flatpak: arbitrary read-access to files in the system-helper context via oci symlink following
    10Monitor
  • Later →CVE-2026-97023Sep 28, 2026 · Flatpak: flatpak: arbitrary file deletion in root context via path traversal in deploy directory export/bin
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
azl3 gcc 13.2.0-7 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
almalinux:cpp8.5.0-30.el8_10.alma.1 · AlmaLinux:8Package registry (OSV)
almalinux:gcc8.5.0-30.el8_10.alma.1 · AlmaLinux:8Package registry (OSV)
almalinux:gcc-c++8.5.0-30.el8_10.alma.1 · AlmaLinux:8Package registry (OSV)
almalinux:gcc-gdb-plugin8.5.0-30.el8_10.alma.1 · AlmaLinux:8Package registry (OSV)
almalinux:gcc-gfortran8.5.0-30.el8_10.alma.1 · AlmaLinux:8Package registry (OSV)
almalinux:gcc-offload-nvptx8.5.0-30.el8_10.alma.1 · AlmaLinux:8Package registry (OSV)
almalinux:gcc-plugin-annobin8.5.0-30.el8_10.alma.1 · AlmaLinux:8Package registry (OSV)
almalinux:gcc-plugin-devel8.5.0-30.el8_10.alma.1 · AlmaLinux:8Package registry (OSV)
almalinux:libasan8.5.0-30.el8_10.alma.1 · AlmaLinux:8Package registry (OSV)
almalinux:libatomic8.5.0-30.el8_10.alma.1 · AlmaLinux:8Package registry (OSV)
almalinux:libatomic-static8.5.0-30.el8_10.alma.1 · AlmaLinux:8Package registry (OSV)
almalinux:libgcc8.5.0-30.el8_10.alma.1 · AlmaLinux:8Package registry (OSV)
debian:gcc-1212.5.0-11 · Debian:14Package registry (OSV)
debian:gcc-1313.5.0-2 · Debian:14Package registry (OSV)
debian:gcc-1414.4.0-3 · Debian:14Package registry (OSV)
debian:gcc-1515.3.0-5 · Debian:14Package registry (OSV)
opensuse:cross-aarch64-gcc1313.5.0+git10516-160000.1.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:cross-aarch64-gcc13-bootstrap13.5.0+git10516-160000.1.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:cross-amdgcn-gcc1313.5.0+git10516-160000.1.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:cross-arm-gcc1313.5.0+git10516-160000.1.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:cross-arm-none-gcc13-bootstrap13.5.0+git10516-160000.1.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:cross-avr-gcc13-bootstrap13.5.0+git10516-160000.1.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:cross-bpf-gcc1313.5.0+git10516-160000.1.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:cross-hppa-gcc13-bootstrap13.5.0+git10516-160000.1.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:gcc1313.5.0+git10516-2.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:gcc1515.3.0+git11272-2.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:gcc1616.2.1+git9713-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:gcc77.5.0+r278197-25.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:cpp0:16.2.1-3.hum1 · Red Hat:hummingbird:1Package registry (OSV)

+17

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Fix recorded+3 d
  3. TodayNov 6, 2026+39 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-49794469 days apartLibxml: heap use after free (uaf) leads to denial of service (dos)
    36Monitor
  • CVE-2026-34001158 days apartXorg: xwayland: x.org x server: use-after-free vulnerability leads to server crash and potential memory corruption
    31Monitor
  • CVE-2026-42014104 days apartGnutls: gnutls: use-after-free in gnutls_pkcs11_token_set_pin
    26Monitor
  • CVE-2025-10911368 days apartLibxslt: use-after-free with key data stored cross-rvt
    22Monitor
  • CVE-2026-1040348 days apartSssd: sssd: denial of service via use-after-free in kcm ticket renewal
    18Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
Low
Availability impact
High

Weakness class (CWE)

CWE-825 · Expired Pointer Dereference

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓
  2. SSVC exploitation— → none

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records