CVE-2023-34389

Allocation of resources without limits could lead to denial of service

MEDIUM

6.5

CVSS Score

Published: November 30, 2023 at 04:54 PM UTC

Updated: June 17, 2026 at 06:03 AM UTC

3 products affected across 2 vendorsSel 451 FirmwareSel-451SEL-451

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.7%

SSVC

No known exploit

Description

An allocation of resources without limits or throttling vulnerability in the Schweitzer Engineering Laboratories SEL-451 could allow a remote authenticated attacker to make the system unavailable for an indefinite amount of time. See product Instruction Manual Appendix A dated 20230830 for more details.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Sel 451 Firmware · Selinc

95%

r315-v0 ≤ v < r315-v4r316-v0 ≤ v < r316-v4r317-v0 ≤ v < r317-v4r318-v0 ≤ v < r318-v5r320-v0 ≤ v < r320-v3r321-v0 ≤ v < r321-v3r322-v0 ≤ v < r322-v3r323-v0 ≤ v < r323-v5r324-v0 ≤ v < r324-v4r325-v0 ≤ v < r325-v3r326-v0 r327-v0

Affected range stops below r315-v4, so it looks safe — our inference, not a vendor statement

Affected range stops below r316-v4, so it looks safe — our inference, not a vendor statement

Affected range stops below r317-v4, so it looks safe — our inference, not a vendor statement

Affected range stops below r318-v5, so it looks safe — our inference, not a vendor statement

Affected range stops below r320-v3, so it looks safe — our inference, not a vendor statement

Affected range stops below r321-v3, so it looks safe — our inference, not a vendor statement

Affected range stops below r322-v3, so it looks safe — our inference, not a vendor statement

Affected range stops below r323-v5, so it looks safe — our inference, not a vendor statement

Affected range stops below r324-v4, so it looks safe — our inference, not a vendor statement

Affected range stops below r325-v3, so it looks safe — our inference, not a vendor statement

selinc-sel-451 (same device)

SEL-451 · Schweitzer Engineering Laboratories

60%

R315-V0 ≤ v < R315-V4R316-V0 ≤ v < R316-V4R317-V0 ≤ v < R317-V4R318-V0 ≤ v < R318-V5R320-V0 ≤ v < R320-V3R321-V0 ≤ v < R321-V3R322-V0 ≤ v < R322-V3R323-V0 ≤ v < R323-V5R324-V0 ≤ v < R324-V4R325-V0 ≤ v < R325-V3R326-V0 ≤ v < R326-V1R327-V0 ≤ v < R327-V1R315-V0 R316-V0 R317-V0 R318-V0 R320-V0 R321-V0 R322-V0 R323-V0 R324-V0 R325-V0 R326-V0 R327-V0

Affected range stops below R315-V4, so it looks safe — our inference, not a vendor statement

Affected range stops below R316-V4, so it looks safe — our inference, not a vendor statement

Affected range stops below R317-V4, so it looks safe — our inference, not a vendor statement

Affected range stops below R318-V5, so it looks safe — our inference, not a vendor statement

Affected range stops below R320-V3, so it looks safe — our inference, not a vendor statement

Affected range stops below R321-V3, so it looks safe — our inference, not a vendor statement

Affected range stops below R322-V3, so it looks safe — our inference, not a vendor statement

Affected range stops below R323-V5, so it looks safe — our inference, not a vendor statement

Affected range stops below R324-V4, so it looks safe — our inference, not a vendor statement

Affected range stops below R325-V3, so it looks safe — our inference, not a vendor statement

Affected range stops below R326-V1, so it looks safe — our inference, not a vendor statement

Affected range stops below R327-V1, so it looks safe — our inference, not a vendor statement

Sel-451 · Selincdevice

80%

All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://selinc.com/support/security-notifications/external-reports/

References (2)

Vendor Advisory

Source: [email protected]

https://selinc.com/support/security-notifications/external-reports/

Third Party Advisory

Source: [email protected]

https://www.nozominetworks.com/blog/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-770

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