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CVE-2019-17178

HuffmanTree_makeFromFrequencies in lodepng.c in LodePNG through 2019-09-28, as used in WinPR in...

7.5 HighFix available

HuffmanTree_makeFromFrequencies in lodepng.c in LodePNG through 2019-09-28, as used in WinPR in FreeRDP and other products, has a memory leak because a supplied realloc pointer (i.e., the first argument to realloc) is also used for a realloc return value.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

2.26%Up 1.2 points since Apr 14, 2021

What each source reports

NVD Score used 7.5

HuffmanTree_makeFromFrequencies in lodepng.c in LodePNG through 2019-09-28, as used in WinPR in FreeRDP and other products, has a memory leak because a supplied realloc pointer (i.e., the first argument to realloc) is also used for a realloc return value.

Record: CVE-2019-17178
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-252, CWE-401
Updated: 2026-11-02

CVE List No score

HuffmanTree_makeFromFrequencies in lodepng.c in LodePNG through 2019-09-28, as used in WinPR in FreeRDP and other products, has a memory leak because a supplied realloc pointer (i.e., the first argument to realloc) is also used for a realloc return value.

Record: CVE-2019-17178
Updated: 2026-11-02

EUVDEUVD-2019-7612 No score

HuffmanTree_makeFromFrequencies in lodepng.c in LodePNG through 2019-09-28, as used in WinPR in FreeRDP and other products, has a memory leak because a supplied realloc pointer (i.e., the first argument to realloc) is also used for a realloc return value.

Record: EUVD-2019-7612
Updated: 2026-11-03

GitHub AdvisoriesGHSA-v77x-r3jc-52jh No score

HuffmanTree_makeFromFrequencies in lodepng.c in LodePNG through 2019-09-28, as used in WinPR in...

HuffmanTree_makeFromFrequencies in lodepng.c in LodePNG through 2019-09-28, as used in WinPR in FreeRDP and other products, has a memory leak because a supplied realloc pointer (i.e., the first argument to realloc) is also used for a realloc return value.

Record: GHSA-v77x-r3jc-52jh
Weakness: CWE-772
Updated: 2026-11-02

OSV 7.5

HuffmanTree_makeFromFrequencies in lodepng.c in LodePNG through 2019-09-28, as used in WinPR in FreeRDP and other products, has a memory leak because a supplied realloc pointer (i.e., the first argument to realloc) is also used for a realloc return value.

Record: CVE-2019-17178
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2019-17178 7.5

HuffmanTree_makeFromFrequencies in lodepng.c in LodePNG through 2019-09-28, as used in WinPR in FreeRDP and other products, has a memory leak because a supplied realloc pointer (i.e., the first argument to realloc) is also used for a realloc return value.

Record: DEBIAN-CVE-2019-17178
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Show 7 moreShow less

OSVUBUNTU-CVE-2019-17178 7.5

HuffmanTree_makeFromFrequencies in lodepng.c in LodePNG through 2019-09-28, as used in WinPR in FreeRDP and other products, has a memory leak because a supplied realloc pointer (i.e., the first argument to realloc) is also used for a realloc return value.

Record: UBUNTU-CVE-2019-17178
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVMGASA-2019-0401 No score

Updated freerdp packages fix security vulnerabilities

Updated freerdp packages fix security vulnerabilities:

Multiple memory leaks in libfreerdp/codec/region.c (CVE-2019-17177).

Memory leak in HuffmanTree_makeFromFrequencies (CVE-2019-17178).

Record: MGASA-2019-0401
Updated: 2026-11-02

OSVopenSUSE-SU-2019:2604-1 No score

Security update for freerdp

This update for freerdp fixes the following issues:

CVE-2019-17177: Fixed multiple memory leaks in libfreerdp/codec/region.c (bsc#1153163).
CVE-2019-17178: Fixed a memory leak in HuffmanTree_makeFromFrequencies (bsc#1153164).

This update was imported from the SUSE:SLE-15:Update update project.

Record: openSUSE-SU-2019:2604-1
Updated: 2026-11-02

OSVopenSUSE-SU-2019:2608-1 No score

Security update for freerdp

This update for freerdp fixes the following issues:

CVE-2019-17177: Fixed multiple memory leaks in libfreerdp/codec/region.c (bsc#1153163).
CVE-2019-17178: Fixed a memory leak in HuffmanTree_makeFromFrequencies (bsc#1153164).

This update was imported from the SUSE:SLE-15-SP1:Update update project.

Record: openSUSE-SU-2019:2608-1
Updated: 2026-11-02

OSVSUSE-SU-2019:3077-1 No score

Security update for freerdp

This update for freerdp fixes the following issues:

CVE-2019-17177: Fixed multiple memory leaks in libfreerdp/codec/region.c (bsc#1153163).
CVE-2019-17178: Fixed a memory leak in HuffmanTree_makeFromFrequencies (bsc#1153164).

Record: SUSE-SU-2019:3077-1
Updated: 2026-11-02

OSVSUSE-SU-2019:3078-1 No score

Security update for freerdp

This update for freerdp fixes the following issues:

CVE-2019-17177: Fixed multiple memory leaks in libfreerdp/codec/region.c (bsc#1153163).
CVE-2019-17178: Fixed a memory leak in HuffmanTree_makeFromFrequencies (bsc#1153164).

Record: SUSE-SU-2019:3078-1
Updated: 2026-11-02

OSVSUSE-SU-2019:3079-1 No score

Security update for freerdp

This update for freerdp fixes the following issues:

CVE-2019-17177: Fixed multiple memory leaks in libfreerdp/codec/region.c (bsc#1153163).
CVE-2019-17178: Fixed a memory leak in HuffmanTree_makeFromFrequencies (bsc#1153164).

Record: SUSE-SU-2019:3079-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`freerdp2` Debian:12	before 2.0.0~git20190204.1.2693389a+dfsg1-2	2.0.0~git20190204.1.2693389a+dfsg1-2
`freerdp` Mageia:7 From an advisory covering 2 CVEs	before 2.0.0-0.rc4.1.1.mga7	2.0.0-0.rc4.1.1.mga7
`freerdp` SUSE:Linux Enterprise Desktop 12 SP4 From an advisory covering 2 CVEs	before 2.0.0~git.1463131968.4e66df7-12.11.1	2.0.0~git.1463131968.4e66df7-12.11.1
`freerdp` SUSE:Linux Enterprise Software Development Kit 12 SP4 From an advisory covering 2 CVEs	before 2.0.0~git.1463131968.4e66df7-12.11.1	2.0.0~git.1463131968.4e66df7-12.11.1
`freerdp` SUSE:Linux Enterprise Software Development Kit 12 SP5 From an advisory covering 2 CVEs	before 2.0.0~git.1463131968.4e66df7-12.11.1	2.0.0~git.1463131968.4e66df7-12.11.1
`freerdp` SUSE:Linux Enterprise Workstation Extension 12 SP4 From an advisory covering 2 CVEs	before 2.0.0~git.1463131968.4e66df7-12.11.1	2.0.0~git.1463131968.4e66df7-12.11.1
`freerdp` SUSE:Linux Enterprise Workstation Extension 12 SP5 From an advisory covering 2 CVEs	before 2.0.0~git.1463131968.4e66df7-12.11.1	2.0.0~git.1463131968.4e66df7-12.11.1
`freerdp` SUSE:Linux Enterprise Workstation Extension 15 From an advisory covering 2 CVEs	before 2.0.0~rc4-3.10.1	2.0.0~rc4-3.10.1
`freerdp` SUSE:Linux Enterprise Workstation Extension 15 SP1 From an advisory covering 2 CVEs	before 2.0.0~rc4-10.4.1	2.0.0~rc4-10.4.1
`freerdp` Ubuntu:16.04:LTS	All versions, plus listed versions 1.1.0~git20140921.1.440916e+dfsg1-5ubuntu11.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.21.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.31.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.4	None known
`freerdp` Ubuntu:18.04:LTS	All versions, plus listed versions 1.1.0~git20140921.1.440916e+dfsg1-15ubuntu11.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.11.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.2	None known
`freerdp` openSUSE:Leap 15.0 From an advisory covering 2 CVEs	before 2.0.0~rc4-lp150.10.1	2.0.0~rc4-lp150.10.1
`freerdp` openSUSE:Leap 15.1 From an advisory covering 2 CVEs	before 2.0.0~rc4-lp151.5.3.1	2.0.0~rc4-lp151.5.3.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-17178 is a high vulnerability (CVSS 7.5) in Freerdp, published October 4, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.26%, the 83rd percentile. Fixed in freerdp2 2.0.0~git20190204.1.2693389a+dfsg1-2.

References

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