CVE-2025-5244Public exploit

Linker crash via empty ELF section group

Published May 27, 2025 · Updated Jul 14, 2026

Memory corruption in GNU Binutils ld 2.44 and earlier allows local users to crash the linker with a crafted ELF object. In bfd/elflink.c, elf_gc_sweep dereferences the null result of elf_next_in_group when a section marked SEC_GROUP has no first member. The flaw is reached during linker garbage collection of the malformed group; the documented consequence is a linker crash, not code execution.

CVSS severity5.3
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in GNU Binutils ld 2.44 and earlier allows local users to crash the linker with a crafted ELF object. In bfd/elflink.c, elf_gc_sweep dereferences the null result of elf_next_in_group when a section marked SEC_GROUP has no first member. The flaw is reached during linker garbage collection of the malformed group; the documented consequence is a linker crash, not code execution.

The record

CVE
CVE-2025-5244
Published
May 27, 2025
Updated
Jul 14, 2026
Vendor
Siemens
Product
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
Classifications
CWE-119
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=V3.1.5 <*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Siemens · SIPLUS S7-1500 CPU 1518-4 PN/DP MFPversion=V3.1.5 <*
Siemens · SIMATIC S7-1500 TM MFP - GNU/Linux subsystemversion=0 <*
Siemens · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPversion=V3.1.5 <*
The GnuPG Project · GNU Binutilsversion=2.0; version=2.1; version=2.10; version=2.11; version=2.12; version=2.13; version=2.14; version=2.15; version=2.16; version=2.17; version=2.18; version=2.19; version=2.2; version=2.20; version=2.21; version=2.22; version=2.23; version=2.24; version=2.25; version=2.26; version=2.27; version=2.28; version=2.29; version=2.3; version=2.30; version=2.31; version=2.32; version=2.33; version=2.34; version=2.35; version=2.36; version=2.37; version=2.38; version=2.39; version=2.4; version=2.40; version=2.41; version=2.42; version=2.43; version=2.44; version=2.5; version=2.6; version=2.7; version=2.8; version=2.9
Siemens · SIMATIC S7-1500 CPU 1518-4 PN/DP MFPversion=V3.1.5 <*

Published CVSS scores

4.8Siemens ProductCERTCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.3Siemens ProductCERTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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