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NVD / CVE Program· CNA redhat

CVE-2026-13732: Gdb: gdb: out-of-bounds write in stabs parser read_member_functions() via crafted elf

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: 0.13% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. Special conditions such as timing or configuration are required.
  • Fixed version: azl3 crash 9.0.0-3 on Azure Linux 3.0 Release Notes; azl3 gdb 13.2-11 on Azure Linux 3.0 Release Notes.

Low priority for now. Upgrade to azl3 crash 9.0.0-3 on Azure Linux 3.0 Release Notes; azl3 gdb 13.2-11 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 GDB's STABS debug format parser. The read_member_functions() function in gdb/stabsread.c contains a linked list removal bug in the code that separates destructor and non-destructor member functions of C++ classes. The bug causes the destructor entries to remain in the main function list while the list length counter is decremented, resulting in an out-of-bounds write when the function list is copied to its final allocated array. An attacker can craft an ELF binary with malicious .stab and .stabstr sections that triggers this out-of-bounds write when a user opens the file in GDB and performs any symbol-inspection operation such as setting a breakpoint. The inferior process does not need to be executed. Under controlled conditions, this was demonstrated to achieve execution of arbitrary commands within the GDB process.

HighCVSS 7.0 · v3.1—No exploit Fix available
Published
Aug 31, 2026
Updated
Oct 14, 2026
EPSS
0.1% · 2th 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 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

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.

Get told when this record changes

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

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-13732

When you'll hear from us

  • when it enters CISA KEV
  • 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 Cost Management On-Premise 1

    • 1791460851 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 10

    • 0:16.3-3.1.el10_2 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 8

    • 0:8.2-20.1.el8_10 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9

    • 0:16.3-3.1.el9_8 and laternot affected · rpm

  • Red Hat Red Hat Hardened Images

    • 17.2-6.2.hum1 and laternot affected · rpm

  • Red Hat Red Hat Update Infrastructure 5

    • 1791978534 and laternot affected · rpm
    • 1791978528 and laternot affected · rpm
    • 1791978528 and laternot affected · rpm
    • 1791964013 and laternot affected · rpm
    • 1791978693 and laternot affected · rpm

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:10gdbbefore 16.3-3.1.el10_216.3-3.1.el10_2
AlmaLinux:10gdb-docbefore 16.3-3.1.el10_216.3-3.1.el10_2
AlmaLinux:10gdb-gdbserverbefore 16.3-3.1.el10_216.3-3.1.el10_2
AlmaLinux:10gdb-headlessbefore 16.3-3.1.el10_216.3-3.1.el10_2
AlmaLinux:10gdb-minimalbefore 16.3-3.1.el10_216.3-3.1.el10_2
AlmaLinux:8gdbbefore 8.2-20.1.el8_108.2-20.1.el8_10
AlmaLinux:8gdb-docbefore 8.2-20.1.el8_108.2-20.1.el8_10
AlmaLinux:8gdb-gdbserverbefore 8.2-20.1.el8_108.2-20.1.el8_10
AlmaLinux:8gdb-headlessbefore 8.2-20.1.el8_108.2-20.1.el8_10
AlmaLinux:9gdbbefore 16.3-3.1.el9_816.3-3.1.el9_8
AlmaLinux:9gdb-docbefore 16.3-3.1.el9_816.3-3.1.el9_8
AlmaLinux:9gdb-gdbserverbefore 16.3-3.1.el9_816.3-3.1.el9_8
AlmaLinux:9gdb-headlessbefore 16.3-3.1.el9_816.3-3.1.el9_8
AlmaLinux:9gdb-minimalbefore 16.3-3.1.el9_816.3-3.1.el9_8
Debian:12gdbfrom 0—
openSUSE:Leap 16.0gdbbefore 16.3-160000.6.116.3-160000.6.1
openSUSE:Leap 16.0gdb-testresultsbefore 16.3-160000.6.116.3-160000.6.1
Red Hat:enterprise_linux:10.2gdbbefore 0:16.3-3.1.el10_20:16.3-3.1.el10_2
Red Hat:enterprise_linux:10.2gdb-debuginfobefore 0:16.3-3.1.el10_20:16.3-3.1.el10_2
Red Hat:enterprise_linux:10.2gdb-debugsourcebefore 0:16.3-3.1.el10_20:16.3-3.1.el10_2
Red Hat:enterprise_linux:10.2gdb-docbefore 0:16.3-3.1.el10_20:16.3-3.1.el10_2
Red Hat:enterprise_linux:10.2gdb-gdbserverbefore 0:16.3-3.1.el10_20:16.3-3.1.el10_2
Red Hat:enterprise_linux:10.2gdb-headlessbefore 0:16.3-3.1.el10_20:16.3-3.1.el10_2
Red Hat:enterprise_linux:10.2gdb-minimalbefore 0:16.3-3.1.el10_20:16.3-3.1.el10_2

+24

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-2026-78002Aug 27, 2026 · Rsyslog: rsyslog: denial of service via heap buffer overflow in rainerscript replace() function
    30Monitor
  • ← EarlierCVE-2026-82327Aug 28, 2026 · Libsolv: libsolv: out-of-bounds write in repo_write() via unvalidated directory id from vertical/paged .solv filelist data
    22Monitor
  • Later →CVE-2026-84233Sep 1, 2026 · Rpm: command execution via macro expansion in `rpmuncompress -x` for crafted `.gem` filenames
    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 crash 9.0.0-3 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
azl3 gdb 13.2-10 on Azure Linux 3.0—Microsoft (MSRC)
azl3 gdb 13.2-11 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
almalinux:gdb16.3-3.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:gdb8.2-20.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gdb-doc16.3-3.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:gdb-doc8.2-20.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gdb-gdbserver16.3-3.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:gdb-gdbserver8.2-20.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gdb-headless16.3-3.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:gdb-headless8.2-20.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:gdb-minimal16.3-3.1.el9_8 · AlmaLinux:9Package registry (OSV)
opensuse:gdb16.3-160000.6.1 · openSUSE:Leap 16.0Package registry (OSV)
opensuse:gdb-testresults16.3-160000.6.1 · openSUSE:Leap 16.0Package registry (OSV)
red hat:gdb0:8.2-20.1.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gdb-debuginfo0:8.2-20.1.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gdb-debugsource0:8.2-20.1.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gdb-doc0:8.2-20.1.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gdb-gdbserver0:8.2-20.1.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gdb-headless0:8.2-20.1.el8_10 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:gdb-minimal0:16.3-3.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
rocky linux:gdb0:8.2-20.1.el8_10 · Rocky Linux:8Package registry (OSV)
suse:gdb16.3-160000.6.1 · SUSE:Linux Micro Extras 6.2Package registry (OSV)

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.

No dated events beyond publication.

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-2026-8647644 days apartGstreamer1-plugins-base: gst-plugins-base: heap buffer overflow via unvalidated gstvideometa plane extents in gst_video_frame_map_id and video_meta_deserialize
    33Monitor
  • CVE-2026-8162718 days apartQemu-kvm: vapic writable rom alias can escape the option-rom window and expose locked smram
    32Monitor
  • CVE-2026-9718524 days apartGimp: gimp: out-of-bounds write in gimpressionist plugin via crafted preset file
    31Monitor
  • CVE-2026-1822033 days apartBinutils: binutils: out-of-bounds write in bfd dlx elf backend relocation processing
    31Monitor
  • CVE-2026-10125836 days apartGhostscript: ghostscript: -dsafer sandbox bypass via type 5 shading oob write and procedure-stream use-after-free
    31Monitor
  • CVE-2026-384247 days apartQemu-kvm: hyperv/syndbg: missing mapped-length guard after cpu_physical_memory_map causes host oob write
    31Monitor

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

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • Special conditions such as timing or configuration are required.

If successful

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

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/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✗ → ✓

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