CVE-2026-34979: OpenPrinting CUPS: Heap overflow in `get_options()`

Published Apr 3, 2026
·
Updated

Accelerate Framework. An out-of-bounds write issue was addressed with improved bounds checking.

Other sources

Accessibility. This issue was addressed with improved data protection.

— Apple

Accounts. An authorization issue was addressed with improved state management.

— Apple

Accounts. This issue was addressed with additional entitlement checks.

— Apple

afpfs. This issue was addressed by removing the vulnerable code.

— Apple

APFS. A buffer overflow was addressed with improved size validation.

— Apple

Credit

Peter Malone, Arni Hardarson (Neonix Security), Stuart Wallace(Totally Not Malicious Software), Ilya Andr (andrd3v)(Totally Not Malicious Software), Rosyna Keller(Totally Not Malicious Software), CJ Vana, David Strnadel, Daniel Febrero, Asaf Cohen, Gongyu Ma@@Mezone0, Jian Lee@@speedyfriend433, Arni Hardarson (Neonix Security)(Appknox), Vinay Kumar Rasala (Xplo8E)(Appknox), Stuart Wallace, 이재영, Sindre Sorhus, LiangWei, Dave G., an anonymous researcher, Cem Onat Karagun, Bhaswanth Chigurupati, Zhongcheng Li (CK01), Prashan Samarathunge, Dem0ns (@天府简易信工作室), Abdelhak Kherroubi, Jasminder Pal Singh, Lehan Dilusha Jayasingha (Sri Lanka), Nick Cook, Sentry Flag, Johan Wahyudi, tamdao, S. Rosario, Tristan Madani@@TristanInSec(Talence Security), Niels Hofmans, Hyunwoo Kim@@v4bel, Franco Belman at Blackwing Intelligence, Richard Zana, Billy Jheng Bing Jhong(STAR Labs SG Pte), Pan Zhenpeng@@Peterpan0927(STAR Labs SG Pte), Mickey Jin@@patch1t, D4rthL, Ahmed Alwardani, Mohamad Dawoud / Abodi Dawoud, Ilya Andr (andrd3v), Zhongcheng Li(IES Red Team), Mr.Gedik@@h4ck2s3c, Mr.Gedik@@h4ck2s3c(Turkish Technology), Kun Peeks@@SwayZGl1tZyyy, Oren Yomtov, Morris Richman@@morrisinlife, Calif.io in collaboration with Claude, Anthropic Research, Ruslan Dautov, Ye Zhang@@VAR10CK(Baidu Security), CVE-2026-65414, Andreas Jaegersberger & Ro Achterberg(Nosebeard Labs), Marc Newlin(SkySafe), jioundai, Murray Mike(Nosebeard Labs), zenith, Sanny Mitra(Cystack), Sihyun Roh (Compsec(Cystack), SNU)(Cystack), ngockhanh(Cystack), Ataberk Yavuzer, 정우 하@@0xfa11babe, Surej Sekhar, Suresh Sundaram, Hari Shanmugam (The Hxr1), Rishabh Jain (rjcyber)(cyberplanet), Pasquale Scola, Jihwan Yoon, Dawuge(Shuffle Team), Mathis Mansière, Duc Anh Nguyen & Ta Duc Thien, Nathaniel Oh@@calysteon, Nik Tsytsarkin, Chris Bailey - Short Circuit, Siyeong kim, Meta Product Security, AL Najafi, Merrick Hare, Ryan Hughes, Kujtim Kryeziu (Sentry), Pavan Nallamothu, ret2happy, Mustafa Calap@@ordinal0, dbg.re), stratan@@5tratan, Rahul Raj, Yongyue WANG AKA Brian.W(OKX security), Omar Cerrito, Юлия Мерцалова, Aaron Grattafiori - NVIDIA AI Red Team, Joseph Shamoon, Meshaal @ Darkcov, 章鱼哥 (aipyaipy.com）@@aipy, 章鱼哥 （aipyaipy.com）@@aipy, instantraaamen (github.com/instantraaamen) Contact: masa.shiramizu.com@@gmail, 章鱼哥 (aipyaipy.com)@@aipy, Jurre van Bergen - Threatnotify, Redon Gashi (Sentry), Thiago Mayllart, N.M.Praveen Nawarathne@@zblockrat, James Gill @infosec.exchange)@@jjtech, Tommy DeVoss@@thedawgyg(Braze Security Team), flower xu, Adriatik Raci, PETOWORKS의 Bugeun Choi@@Bugeun, Daisuke Hatakeyama, Ryohei Ueki Research)@@SYZD, Manish Bhatt, Amazon Leo Security, oxsignal, Meta Red Team X - Nik Tsytsarkin, Junyeong Lee (jylab.github.io), Aditya Kumar, John Nzyuko Uvyu, Narendra Singh@@_3P1C, Geoffrey Lovelace, Yurii Bakurov, Bruce Dang(Calif), Ron Masas(BreakPoint), Luke Symons, Andrey Chernykh, Anand (anandsreekumar.com), Jiyong Yang, Vishal Patidar, Roman Zabicki, Redon Gashi(Sentry), He Wei (ギカク), Feng Xue(ThreatBook), XGPT(ThreatBook), Alfredo Pesoli@@__rev(Bynar), Jonathan Bar Or@@yo_yo_yo_jbo, Arni Hardarson (Neonix Security)(Talence Security), 정우 하, Aswin Kumar Gokulakannan, Dun, Justin O'Leary@@olearysec(olearysec), Meta Red Team X, Geonha Lee@@leegn4a, Mateusz Jurczyk(Google Project Zero), Eddy Tsalolikhin, Johann Rehberger, Varik Matevosyan, Musaab Khan@@bxff(Tencent Xuanwu Lab), XlabAI Team(Tencent Xuanwu Lab), Atuin Automated Vulnerability Discovery Engine, Guannan Wang, Zhanpeng Liu, Jiashuo Liang, Guancheng Li, Iain Harkiss, Mihalis Haatainen, Ashish Kunwar, Ari Hawking, Seiji Sakurai@@HeapSmasher, Csaba Fitzl@@theevilbit(Iru), genter0(Calif), Svetoslav Stolarov(Calif), Josh Maine(Calif), Bernhard Jackiewicz, Ryan Hileman via Xint Code (xint.io), James Young, OpenAI, Hüseyin Kabasakal@@HuseyinK01, Hiroki Imai (LAC Co., Ltd.), Surya Narayan Kushwaha, genter0, James Duffy@@0x4A616D657344, Abhijeet Singh (www.linkedin.com/in/abhiunix/), R4mbb(KRsecurity), Stuart Thomas, Vladislav Shevchenko (Positive Technologies), Fábio Luís@@scanpt(STAR Labs SG Pte), Richard Zana(STAR Labs SG Pte), Wang Yu, CVE-2019-5598, Mohamed Wedatalla, Arjanit Isufi, Adrián Díaz Aguilar, HvxyZLF, Shuiliang Xie, Kitten Food, Dave G.(supernetworks), Alex Radocea(supernetworks), Armend Gashi, Myeonghun Pak, Alan Banderas@@creeper4004, Mustafa Ahmed, Matthew Zamat, Yiğit Can YILMAZ@@yilmazcanyigit, Dmytro Merkulov, Claudio Bozzato(Cisco Talos), Francesco Benvenuto(Cisco Talos), Hoffcona(IES Red Team), silo, Tristan Madani (Talence Security), Kenneth Chew, Dora Orak, Arbuckle@@Ethan, @@leptos_null, Piotr Jerzy Duszynski(MurphySec), f0r(MurphySec), ธนกฤต ทัฬหะ, Hongsik Kim (mnur), Bálint Magyar (balintmagyar.com), Kieran Klukas (taciturnaxolotl), Liu Xue & 九宫格(Chongqing Telecom), Issa Sancho, @@08Tc3wBB(Jamf), Prathamesh Walunj(Iru), Ahmad Al Harrizuan Izadin, Ilya Andr (andrd3v)(Positive Technologies), Dhiyanesh Selvaraj@@redroot97, Alfredo Pesoli via Bynario Atlas (bynar.io)@@__rev, Anon Tuttu Venus, Stefan Esser (Calif), Jaeho Nam(SNU CSE MMLAB), Jungbum Lee(SNU CSE MMLAB), Sangwi Kang(SNU CSE MMLAB), Hyeonguk Ko(SNU CSE MMLAB), Taekyoung Kwon(SNU CSE MMLAB), John Lussier, Filip Olszak, Meshaal@@unrealmesh, Abodi Dawoud(van Dijk), Merrick Hare(van Dijk), Roel(van Dijk), Gergely Kalman@@gergely_kalman, Pranav Gopalkrishnan, Alan Wang, Ailsa Sun, Hovav Shacham, Riccardo Paccagnella, Chris Fletcher, David Kohlbrenner, Owen Pawling@@owenpawling, Stanislav Jelezoglo, Gongyu Ma (twitter@@Mezone0, Jonghoon Han (Aegis)(Shuffle Team), bubu(Shuffle Team), 이재영(Shuffle Team), Tae Woo Kim(Shuffle Team), Ricardo Prado, Abodi Dawoud(Best Buddy Apps), Guilherme Rambo(Best Buddy Apps), Jakob Pammer(Calif), 재영 정(Calif), 재영 정(ThreatBook), Jay Patel, 재영 정, YingMuo@@YingMuo(DEVCORE Research Team), Rodolphe BRUNETTI@@eisw0lf(Lupus Nova), 杉山 壮太, Abodi Dawoud, 糖豆爸爸(@晴天组织), Robert Mindo, Ujjwal Reddy Kalvolu Sreenivasa Reddy, Paul Montgomery@@nullevent, Jérôme Djouder, Seung Je Seong(Positive Technologies), Jakob Pammer, Meridian Miftari, Amy (amys.website), Kirin@@Pwnrin, Zhongquan Li@@Guluisacat, Koh M. Nakagawa@@tsunek0h(FFRI Security Inc), deepsec@@DarkNavyOrg(DARKNAVY), Rohit Chatterjee, Lance Cain - Senior Consultant at SpecterOps Inc., Zeyang Li&Yuxiang Wang(Chongqing Telecom), an anonymous researcher(Iru), Rodolphe Brunetti@@eisw0lf(Iru), Ryan Dowd@@_rdowd(Iru), Isaiah Ryan Ehlert (isaiahehlert.com)@@icloud(Iru), Charlie Weiss, Noah Gregory (wts.dev), Joshua Jewett@@JoshJewett33, Tomi (tk0) Koski@@tomikoski, Kraken Cryptocurrency Exchange, HE WEI（ギカク）(Calif), Joseph Semaan(Calif), bubu(Calif), Omar Cerrito(Calif), HE WEI (ギカク)(Calif), Roman Zabicki(Calif), Richard Zana(Calif), Chris Bailey - Short Circuit(Calif), Aswin Kumar Gokulakannan(Calif), Surya Narayan Kushwaha(Calif), Souta Sugiyama, Viggo Lekdorf, Tomi Garcia (archyxsec), Kwak Kiyong / kakaogames, OGINOME Tomohito, Efstratios Kaplanellis@@5tratan(Almamater Technologies), Drin Raci(sentry)

Affected Software

5 affected componentsFixes available
OpenPrinting CUPS<=2.4.16
debian/cups<=2.3.3op2-3+deb11u8, <=2.3.3op2-3+deb11u10, <=2.4.2-3+deb12u9, <=2.4.10-3+deb13u2, <=2.4.10-3+deb13u1
2.4.18-1
OpenPrinting CUPS<=2.4.16
Apple macOS Golden Gate<27
27
Microsoft azl3 cups 2.4.16-1<2.4.17-1
2.4.17-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/cups to a version that resolves this vulnerability.

    Fixed in 2.4.18-1
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.4.17-1
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 27

Event History

Apr 3, 2026
CVE Published
via MITRE·09:16 PM
Data Sourced
via MITRE·09:16 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·10:16 PM
DescriptionSeverityWeaknessAffected Software
Apr 5, 2026
Data Sourced
via Microsoft·08:01 AM
DescriptionSeverityWeaknessAffected Software
Sep 14, 2026
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2026-34979?

CVE-2026-34979 is classified as a high-severity vulnerability due to the potential for remote code execution through a heap overflow.

2

How do I fix CVE-2026-34979?

To fix CVE-2026-34979, upgrade OpenPrinting CUPS to version 2.4.17 or later where the vulnerability has been patched.

3

What types of systems are affected by CVE-2026-34979?

CVE-2026-34979 affects Linux and other Unix-like operating systems running OpenPrinting CUPS versions up to and including 2.4.16.

4

What is the nature of the vulnerability in CVE-2026-34979?

CVE-2026-34979 involves a heap-based buffer overflow in the CUPS scheduler during the processing of filter option strings from job attributes.

5

Can CVE-2026-34979 be exploited remotely?

Yes, CVE-2026-34979 can potentially be exploited remotely by sending specially crafted print jobs to an affected CUPS server.

Company

Resources

Contact

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