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NVD / CVE Program· CNA EEF

CVE-2026-49759: Stack buffer overflow in SCTP error cause parsing in inet_drv allows remote VM crash

HighCVSS 8.8 · v4.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 35/100)

  • 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: 0.49% (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: Erlang OTP 15.2.7.9, 16.4.0.2, 17.0.2; azl3 erlang 26.2.5.20-1 on Azure Linux 3.0 26.2.5.21-2.

Low priority for now. Upgrade to Erlang OTP 15.2.7.9, 16.4.0.2, 17.0.2; azl3 erlang 26.2.5.20-1 on Azure Linux 3.0 26.2.5.21-2 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

Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk. The sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated ErlDrvTermData spec[] array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service. A crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited. This issue affects OTP from OTP 17.0 before OTP 27.3.4.13, OTP 28.5.0.2, and OTP 29.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2, and 17.0.2. Whether OTP before OTP 17.0, corresponding to erts before 6.0, is affected is unknown.

Published
Jun 10, 2026
Updated
Oct 26, 2026
EPSS
0.4% · 43th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · EEF
8.8
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

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-2026-49759

When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
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Noroxi analysis

What does it mean in your environment?

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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.

VendorProduct
erlangerlang/otp
erlangerts

Versions reported by the vendor

Affected version ranges reported by the assigning authority (EEF). Independent of NVD's CPE analysis and usually ahead of it.

  • Erlang OTP

    • 17.0 and lateraffected · otpfixed in 27.3.4.13, 28.5.0.2, 29.0.2
    • 6.0 and lateraffected · otpfixed in 15.2.7.9, 16.4.0.2, 17.0.2
    • 84adefa331c4159d432d22840663c38f155cd4c1 and later · before 3983d495284331c121f600a80bac9fcf4e16381eaffected · git
    • 3983d495284331c121f600a80bac9fcf4e16381e and laternot affected · git
Affected versions · NVD (6)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • erlang erlang/otp17.0 and later · before 27.3.4.13
  • erlang erlang/otp28.0 and later · before 28.5.0.2
  • erlang erlang/otp29.0 and later · before 29.0.2
  • erlang erts6.0 and later · before 15.2.7.9
  • erlang erts16.0 and later · before 16.4.0.2
  • erlang erts17.0 and later · before 17.0.2

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12erlangfrom 0—
Debian:13erlangbefore 1:27.3.4.1+dfsg-1+deb13u31:27.3.4.1+dfsg-1+deb13u3
Debian:14erlangbefore 1:29.0.2+dfsg-11:29.0.2+dfsg-1
openSUSE:Tumbleweederlangbefore 28.5.0.4-1.128.5.0.4-1.1
openSUSE:Tumbleweederlang27before 27.1.3-3.127.1.3-3.1
Red Hat:hummingbird:1erlang27before 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-asn1before 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-common_testbefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-compilerbefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-cryptobefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-debuggerbefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-dialyzerbefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-diameterbefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-edocbefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-eldapbefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-erl_interfacebefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-ertsbefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-etbefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-eunitbefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-examplesbefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-ftpbefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-gdb-toolsbefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-inetsbefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1
Red Hat:hummingbird:1erlang27-jinterfacebefore 0:27.3.4.17-1.hum10:27.3.4.17-1.hum1

+22

Same product

erlang: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-55953TLS 1.2 and DTLS client accepts unoffered anonymous cipher suite, bypassing server authentication
    36Monitor
  • CVE-2026-59251Denial of service via exponential certificate policy tree growth in path validation
    34Monitor
  • CVE-2026-58227TLS/DTLS denial of service via unbounded recursion on cross-signed peer certificate chain
    34Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-48859Jun 10, 2026 · SSH server timing side-channel in ssh_auth:check_password/3 allows unauthenticated username enumeration
    25Monitor
  • ← EarlierCVE-2026-48860Jun 10, 2026 · Distribution-over-TLS LAN allowlist silently bypassed due to sockname/peername confusion in inet_tls_dist
    30Monitor
  • Later →CVE-2026-53422Jul 2, 2026 · SFTP REALPATH path-existence oracle allowing filesystem enumeration outside configured root
    9Monitor

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
Erlang OTP15.2.7.9Vendor (CNA)
Erlang OTP16.4.0.2Vendor (CNA)
Erlang OTP17.0.2Vendor (CNA)
Erlang OTP27.3.4.13Vendor (CNA)
Erlang OTP28.5.0.2Vendor (CNA)
Erlang OTP29.0.2Vendor (CNA)
Erlang OTP3983d495284331c121f600a80bac9fcf4e16381eVendor (CNA)
azl3 erlang 26.2.5.20-1 on Azure Linux 3.026.2.5.21-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:erlang1:27.3.4.1+dfsg-1+deb13u3 · Debian:13Package registry (OSV)
opensuse:erlang28.5.0.4-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:erlang2727.1.3-3.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:erlang270:27.3.4.17-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-asn10:27.3.4.17-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-common_test0:27.3.4.17-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-compiler0:27.3.4.17-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-crypto0:27.3.4.17-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-debugger0:27.3.4.17-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-dialyzer0:27.3.4.17-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-diameter0:27.3.4.17-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-edoc0:27.3.4.17-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-eldap0:27.3.4.17-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-erl_interface0:27.3.4.17-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:erlang27-erts0:27.3.4.17-1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
suse:erlang23.3.4.19-150300.3.39.1 · SUSE:Linux Enterprise Module for Server Applications 15 SP7Package registry (OSV)
suse:erlang2626.2.1-150300.7.28.1 · SUSE:Linux Enterprise Module for Server Applications 15 SP7Package 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.

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 researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Not on record for this CVE: EPSS history · variant or chain candidate · public bounty program.

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
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
X

Weakness class (CWE)

CWE-121 · Stack-based Buffer Overflow

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records