How severe is CVE-2020-13845?

CVE-2020-13845 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-13845 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-13845?

CVE-2020-13845 affects Sylabs Singularity. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-13845?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-13845 published?

CVE-2020-13845 was published on 2020-07-14 and last updated on 2026-06-17.

CVE-2020-13845

CVE-2020-13845 is a high-severity vulnerability in Sylabs Singularity with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-347.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-347
Affected product: Sylabs Singularity
Published: 2020-07-14
Last modified: 2026-06-17

Description

Sylabs Singularity 3.0 through 3.5 has Improper Validation of an Integrity Check Value. Image integrity is not validated when an ECL policy is enforced. The fingerprint required by the ECL is compared against the signature object descriptor(s) in the SIF file, rather than to a cryptographically validated signature.

Frequently asked questions

What is CVE-2020-13845?: Sylabs Singularity 3.0 through 3.5 has Improper Validation of an Integrity Check Value. Image integrity is not validated when an ECL policy is enforced. The fingerprint required by the ECL is compared against the signature object descriptor(s) in the SIF file, rather than to a cryptographically validated signature.
How severe is CVE-2020-13845?: CVE-2020-13845 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-13845 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-13845?: CVE-2020-13845 affects Sylabs Singularity. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-13845?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-13845 published?: CVE-2020-13845 was published on 2020-07-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sylabs:singularity:*:*:*:*:*:*:*:*

More vulnerabilities in Sylabs Singularity

CVE-2021-33027 — Critical (CVSS 9.8): Sylabs Singularity Enterprise through 1.6.2 has Insufficient Entropy in a nonce.
CVE-2021-33622 — Critical (CVSS 9.8): Sylabs Singularity 3.5.x and 3.6.x, and SingularityPRO before 3.5-8, has an Incorrect Check of a Function's Return…
CVE-2020-25040 — High (CVSS 8.8): Sylabs Singularity through 3.6.2 has Insecure Permissions on temporary directories used in explicit and implicit…
CVE-2019-11328 — High (CVSS 8.8): An issue was discovered in Singularity 3.1.0 to 3.2.0-rc2, a malicious user with local/network access to the host…
CVE-2020-15229 — High (CVSS 8.2): Singularity (an open source container platform) from version 3.1.1 through 3.6.3 has a vulnerability. Due to insecure…
CVE-2020-25039 — High (CVSS 8.1): Sylabs Singularity 3.2.0 through 3.6.2 has Insecure Permissions on temporary directories used in fakeroot or user…

All CVEs affecting Sylabs Singularity →

Other CWE-347 (Improper Verification of Cryptographic Signature) vulnerabilities

CVE-2026-48558 — Critical (CVSS 10.0): SimpleHelp versions 5.5.15 and prior and 6.0 pre-release versions contain an authentication bypass vulnerability in the…
CVE-2023-25574 — Critical (CVSS 10.0): `jupyterhub-ltiauthenticator` is a JupyterHub authenticator for learning tools interoperability (LTI).…
CVE-2024-45409 — Critical (CVSS 10.0): The Ruby SAML library is for implementing the client side of a SAML authorization. Ruby-SAML in <= 12.2 and 1.13.0 <=…
CVE-2024-32962 — Critical (CVSS 10.0): xml-crypto is an xml digital signature and encryption library for Node.js. In affected versions the default…
CVE-2022-24884 — Critical (CVSS 10.0): ecdsautils is a tiny collection of programs used for ECDSA (keygen, sign, verify). `ecdsa_verify_[prepare_]legacy()`…
CVE-2021-33885 — Critical (CVSS 10.0): An Insufficient Verification of Data Authenticity vulnerability in B. Braun SpaceCom2 prior to 012U000062 allows a…

Browse all CWE-347 (Improper Verification of Cryptographic Signature) vulnerabilities →