How severe is CVE-2020-12866?

CVE-2020-12866 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-12866 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12866?

CVE-2020-12866 primarily affects Sane-project Sane Backends. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-12866?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-12866 published?

CVE-2020-12866 was published on 2020-06-24 and last updated on 2026-06-17.

CVE-2020-12866

CVE-2020-12866 is a medium-severity vulnerability in Sane-project Sane Backends with a CVSS 3.x base score of 5.7. 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-476.

Key facts

Severity: Medium (CVSS 3.x base score 5.7)
CVSS v2: 2.7
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Sane-project Sane Backends
Published: 2020-06-24
Last modified: 2026-06-17

Description

A NULL pointer dereference in SANE Backends before 1.0.30 allows a malicious device connected to the same local network as the victim to cause a denial of service, GHSL-2020-079.

Frequently asked questions

What is CVE-2020-12866?: A NULL pointer dereference in SANE Backends before 1.0.30 allows a malicious device connected to the same local network as the victim to cause a denial of service, GHSL-2020-079.
How severe is CVE-2020-12866?: CVE-2020-12866 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-12866 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12866?: CVE-2020-12866 primarily affects Sane-project Sane Backends. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-12866?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-12866 published?: CVE-2020-12866 was published on 2020-06-24 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:o:sane-project:sane_backends:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*

More vulnerabilities in Sane-project Sane Backends

CVE-2020-12861 — High (CVSS 8.8): A heap buffer overflow in SANE Backends before 1.0.30 allows a malicious device connected to the same local network as…
CVE-2020-12865 — High (CVSS 8.0): A heap buffer overflow in SANE Backends before 1.0.30 may allow a malicious device connected to the same local network…
CVE-2023-46047 — High (CVSS 7.3): An issue in Sane 1.2.1 allows a local attacker to execute arbitrary code via a crafted file to the…
CVE-2023-46052 — High (CVSS 7.1): Sane 1.2.1 heap bounds overwrite in init_options() from backend/test.c via a long init_mode string in a configuration…
CVE-2020-12867 — Medium (CVSS 5.5): A NULL pointer dereference in sanei_epson_net_read in SANE Backends before 1.0.30 allows a malicious device connected…
CVE-2020-12864 — Medium (CVSS 4.3): An out-of-bounds read in SANE Backends before 1.0.30 may allow a malicious device connected to the same local network…

All CVEs affecting Sane-project Sane Backends →

Other CWE-476 (NULL Pointer Dereference) vulnerabilities

CVE-2022-36648 — Critical (CVSS 10.0): The hardware emulation in the of_dpa_cmd_add_l2_flood of rocker device model in QEMU, as used in 7.0.0 and earlier,…
CVE-2020-14500 — Critical (CVSS 10.0): Secomea GateManager all versions prior to 9.2c, An attacker can send a negative value and overwrite arbitrary data.
CVE-2010-2495 — Critical (CVSS 10.0): The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does…
CVE-2026-46195 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building…
CVE-2026-31657 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: batman-adv: hold claim backbone gateways by…
CVE-2026-31436 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor…

Browse all CWE-476 (NULL Pointer Dereference) vulnerabilities →