CVE-2026-37555: An issue was discovered in libsndfile 1.2.2 IMA ADPCM codec.
Noroxi assessment
Priority: Monitor (action score 30/100)
- 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: 0.50% (FIRST EPSS).
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- According to CISA the attack is automatable: targets can be found by mass scanning.
- Fixed version: azl3 libsndfile 1.2.2-4 on Azure Linux 3.0 1.2.2-5; cbl2 libsndfile 1.0.31-4 on CBL-Mariner 2.0 Release Notes.
Low priority for now. Upgrade to azl3 libsndfile 1.2.2-4 on Azure Linux 3.0 1.2.2-5; cbl2 libsndfile 1.0.31-4 on CBL-Mariner 2.0 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
An issue was discovered in libsndfile 1.2.2 IMA ADPCM codec. The AIFF code path (line 241) was fixed with (sf_count_t) cast, but the WAV code path (line 235) and close path (line 167) were not. When samplesperblock (int) * blocks (int) exceeds INT_MAX, the 32-bit multiplication overflows before being assigned to sf.frames (sf_count_t/int64). With samplesperblock=50000 and blocks=50000, the product 2500000000 overflows to -1794967296. This causes incorrect frame count leading to heap buffer overflow or denial of service. Both values come from the WAV file header and are attacker-controlled. This issue was discovered after an incomplete fix for CVE-2022-33065.
- Published
- Apr 29, 2026
- Updated
- Jul 15, 2026
- EPSS
- 0.5% · 42th percentile
- CWE
- CWE-190
Report tools
Action score
30
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
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.
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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.
We use this product, ask for helpAffected 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.
| Vendor | Product | CPE |
|---|---|---|
| libsndfile project | libsndfile | cpe:2.3:a:libsndfile_project:libsndfile |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- libsndfile project libsndfile1.2.2
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:10 | libsndfile | before 1.2.2-6.el10_2.1 | 1.2.2-6.el10_2.1 |
| AlmaLinux:10 | libsndfile-devel | before 1.2.2-6.el10_2.1 | 1.2.2-6.el10_2.1 |
| AlmaLinux:10 | libsndfile-utils | before 1.2.2-6.el10_2.1 | 1.2.2-6.el10_2.1 |
| AlmaLinux:8 | libsndfile | before 1.0.28-17.el8_10 | 1.0.28-17.el8_10 |
| AlmaLinux:8 | libsndfile-devel | before 1.0.28-17.el8_10 | 1.0.28-17.el8_10 |
| AlmaLinux:8 | libsndfile-utils | before 1.0.28-17.el8_10 | 1.0.28-17.el8_10 |
| AlmaLinux:9 | libsndfile | before 1.0.31-9.el9_8.1 | 1.0.31-9.el9_8.1 |
| AlmaLinux:9 | libsndfile-devel | before 1.0.31-9.el9_8.1 | 1.0.31-9.el9_8.1 |
| AlmaLinux:9 | libsndfile-utils | before 1.0.31-9.el9_8.1 | 1.0.31-9.el9_8.1 |
| Debian:12 | libsndfile | from 0 | — |
| openSUSE:Tumbleweed | libsndfile | before 1.2.2-5.1 | 1.2.2-5.1 |
| Red Hat:enterprise_linux_eus:10.0 | libsndfile | before 0:1.2.2-5.el10_0.1 | 0:1.2.2-5.el10_0.1 |
| Red Hat:enterprise_linux_eus:10.0 | libsndfile-debuginfo | before 0:1.2.2-5.el10_0.1 | 0:1.2.2-5.el10_0.1 |
| Red Hat:enterprise_linux_eus:10.0 | libsndfile-debugsource | before 0:1.2.2-5.el10_0.1 | 0:1.2.2-5.el10_0.1 |
| Red Hat:enterprise_linux_eus:10.0 | libsndfile-devel | before 0:1.2.2-5.el10_0.1 | 0:1.2.2-5.el10_0.1 |
| Red Hat:enterprise_linux_eus:10.0 | libsndfile-utils | before 0:1.2.2-5.el10_0.1 | 0:1.2.2-5.el10_0.1 |
| Red Hat:enterprise_linux_eus:10.0 | libsndfile-utils-debuginfo | before 0:1.2.2-5.el10_0.1 | 0:1.2.2-5.el10_0.1 |
| Red Hat:enterprise_linux:10.2 | libsndfile | before 0:1.2.2-6.el10_2.1 | 0:1.2.2-6.el10_2.1 |
| Red Hat:enterprise_linux:10.2 | libsndfile-debuginfo | before 0:1.2.2-6.el10_2.1 | 0:1.2.2-6.el10_2.1 |
| Red Hat:enterprise_linux:10.2 | libsndfile-debugsource | before 0:1.2.2-6.el10_2.1 | 0:1.2.2-6.el10_2.1 |
| Red Hat:enterprise_linux:10.2 | libsndfile-devel | before 0:1.2.2-6.el10_2.1 | 0:1.2.2-6.el10_2.1 |
| Red Hat:enterprise_linux:10.2 | libsndfile-utils | before 0:1.2.2-6.el10_2.1 | 0:1.2.2-6.el10_2.1 |
| Red Hat:enterprise_linux:10.2 | libsndfile-utils-debuginfo | before 0:1.2.2-6.el10_2.1 | 0:1.2.2-6.el10_2.1 |
| Red Hat:enterprise_linux:8::appstream | libsndfile | before 0:1.0.28-17.el8_10 | 0:1.0.28-17.el8_10 |
+43
Same product
libsndfile project: all recordsOther highest-scoring records for the same primary product.
- CVE-2017-12562Heap-based Buffer Overflow in the psf_binheader_writef function in common.c in libsndfile through 1.0.28 allows remote attackers to cause a 40Plan
- CVE-2021-3246A heap buffer overflow vulnerability in msadpcm_decode_block of libsndfile 1.0.30 allows attackers to execute arbitrary code via a crafted W36Monitor
- CVE-2018-13139A stack-based buffer overflow in psf_memset in common.c in libsndfile 1.0.28 allows remote attackers to cause a denial of service (applicati36Monitor
Published before and after this one in the same product
- ← EarlierCVE-2024-50613Oct 27, 2024 · libsndfile through 1.2.2 has a reachable assertion, that may lead to application exit, in mpeg_l3_encode.c mpeg_l3_encoder_close.26Monitor
- ← EarlierCVE-2025-52194Aug 21, 2025 · A buffer overflow vulnerability exists in libsndfile version 1.2.2 and potentially earlier versions when processing malformed IRCAM audio fi30Monitor
- ← EarlierCVE-2025-56226Jan 14, 2026 · Libsndfile <=1.2.2 contains a memory leak vulnerability in the mpeg_l3_encoder_init() function within the mpeg_l3_encode.c file.21Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| azl3 libsndfile 1.2.2-4 on Azure Linux 3.0 | 1.2.2-5 · CBL-Mariner Releases | Microsoft (MSRC) |
| cbl2 libsndfile 1.0.31-4 on CBL-Mariner 2.0 | Release Notes | Microsoft (MSRC) |
| almalinux:libsndfile | 1.0.28-17.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libsndfile-devel | 1.0.28-17.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libsndfile-utils | 1.0.28-17.el8_10 · AlmaLinux:8 | Package registry (OSV) |
| opensuse:libsndfile | 1.2.2-5.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:libsndfile | 0:1.0.28-17.el8_10 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libsndfile-debuginfo | 0:1.0.28-17.el8_10 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libsndfile-debugsource | 0:1.0.28-17.el8_10 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libsndfile-devel | 0:1.0.28-17.el8_10 · Red Hat:enterprise_linux:8::crb | Package registry (OSV) |
| red hat:libsndfile-utils | 0:1.0.28-17.el8_10 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:libsndfile-utils-debuginfo | 0:1.0.28-17.el8_10 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| rocky linux:libsndfile | 0:1.0.28-17.el8_10 · Rocky Linux:8 | Package 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.
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.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
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.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-190 · Integer Overflow or WraparoundCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (18 more)Show less
- github.com/libsndfile/libsndfile/issues/833
- access.redhat.com/errata/RHSA-2026:19559
- access.redhat.com/errata/RHSA-2026:19560
- access.redhat.com/errata/RHSA-2026:19610
- access.redhat.com/errata/RHSA-2026:23221
- access.redhat.com/errata/RHSA-2026:23222
- access.redhat.com/errata/RHSA-2026:23223
- access.redhat.com/errata/RHSA-2026:25092
- access.redhat.com/errata/RHSA-2026:25197
- access.redhat.com/errata/RHSA-2026:25198
- access.redhat.com/errata/RHSA-2026:25227
- access.redhat.com/errata/RHSA-2026:30078
- access.redhat.com/errata/RHSA-2026:30087
- access.redhat.com/errata/RHSA-2026:30088
- access.redhat.com/errata/RHSA-2026:30089
- access.redhat.com/security/cve/CVE-2026-37555
- bugzilla.redhat.com/show_bug.cgi?id=2463856
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-37555.json
Vendor advisories and official records. Exploit/PoC links are deliberately left out.